Android 自定义标签

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
/**
 * Created by tab on 2020/4/30.
 */
public class TabLabelsView extends ViewGroup implements View.OnClickListener {
 
    private Context mContext;
 
    private ColorStateList mTextColor;
    private float mTextSize;
    private Drawable mLabelBg;
    private int mTextPaddingLeft;
    private int mTextPaddingTop;
    private int mTextPaddingRight;
    private int mTextPaddingBottom;
    private int mWordMargin;
    private int mLineMargin;
    private SelectType mSelectType;
    private int mMaxSelect;
    private int mMinSelect;
    private int mMaxLines;
 
    private boolean isIndicator; //只能看,不能手动改变选中状态。
 
    //用于保存label数据的key
    private static final int KEY_DATA = R.id.tag_key_data;
    //用于保存label位置的key
    private static final int KEY_POSITION = R.id.tag_key_position;
 
    private ArrayList<Object> mLabels = new ArrayList<>();
    //保存选中的label的位置
    private ArrayList<Integer> mSelectLabels = new ArrayList<>();
 
    //保存必选项。在多选模式下,可以设置必选项,必选项默认选中,不能反选
    private ArrayList<Integer> mCompulsorys = new ArrayList<>();
 
    private OnLabelClickListener mLabelClickListener;
    private OnLabelSelectChangeListener mLabelSelectChangeListener;
 
    private ArrayList<TextView> labelsTxt = new ArrayList<>();
 
    /**
     * Label的选择类型
     */
    public enum SelectType {
        //不可选中,也不响应选中事件回调。(默认)
        NONE(1),
        //单选,可以反选。
        SINGLE(2),
        //单选,不可以反选。这种模式下,至少有一个是选中的,默认是第一个
        SINGLE_IRREVOCABLY(3),
        //多选
        MULTI(4);
 
        int value;
 
        SelectType(int value) {
            this.value = value;
        }
 
        static SelectType get(int value) {
            switch (value) {
                case 1:
                    return NONE;
                case 2:
                    return SINGLE;
                case 3:
                    return SINGLE_IRREVOCABLY;
                case 4:
                    return MULTI;
            }
            return NONE;
        }
    }
 
    public TabLabelsView(Context context) {
        super(context);
        mContext = context;
    }
 
    public TabLabelsView(Context context, AttributeSet attrs) {
        super(context, attrs);
        mContext = context;
        getAttrs(context, attrs);
    }
 
    public TabLabelsView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        mContext = context;
        getAttrs(context, attrs);
    }
 
    private void getAttrs(Context context, AttributeSet attrs) {
        if (attrs != null) {
            TypedArray mTypedArray = context.obtainStyledAttributes(attrs, R.styleable.tab_labels_view);
            int type = mTypedArray.getInt(R.styleable.tab_labels_view_selectType, 1);
            mSelectType = SelectType.get(type);
 
            mMaxSelect = mTypedArray.getInteger(R.styleable.tab_labels_view_maxSelect, 0);
            mMinSelect = mTypedArray.getInteger(R.styleable.tab_labels_view_minSelect, 0);
            mMaxLines = mTypedArray.getInteger(R.styleable.tab_labels_view_maxLines, 0);
            isIndicator = mTypedArray.getBoolean(R.styleable.tab_labels_view_isIndicator, false);
            mTextColor = mTypedArray.getColorStateList(R.styleable.tab_labels_view_labelTextColor);
            mTextSize = mTypedArray.getDimension(R.styleable.tab_labels_view_labelTextSize,
                    sp2px(context, 14));
            mTextPaddingLeft = mTypedArray.getDimensionPixelOffset(
                    R.styleable.tab_labels_view_labelTextPaddingLeft, 0);
            mTextPaddingTop = mTypedArray.getDimensionPixelOffset(
                    R.styleable.tab_labels_view_labelTextPaddingTop, 0);
            mTextPaddingRight = mTypedArray.getDimensionPixelOffset(
                    R.styleable.tab_labels_view_labelTextPaddingRight, 0);
            mTextPaddingBottom = mTypedArray.getDimensionPixelOffset(
                    R.styleable.tab_labels_view_labelTextPaddingBottom, 0);
            mLineMargin = mTypedArray.getDimensionPixelOffset(R.styleable.tab_labels_view_lineMargin, 0);
            mWordMargin = mTypedArray.getDimensionPixelOffset(R.styleable.tab_labels_view_wordMargin, 0);
            int labelBgResId = mTypedArray.getResourceId(R.styleable.tab_labels_view_labelBackground, 0);
            if (labelBgResId != 0) {
                mLabelBg = getResources().getDrawable(labelBgResId);
            } else {
                int labelBgColor = mTypedArray.getColor(R.styleable.tab_labels_view_labelBackground, Color.TRANSPARENT);
                mLabelBg = new ColorDrawable(labelBgColor);
            }
            mTypedArray.recycle();
        }
    }
 
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 
        int count = getChildCount();
        int maxWidth = MeasureSpec.getSize(widthMeasureSpec) - getPaddingLeft() - getPaddingRight();
 
        int contentHeight = 0; //记录内容的高度
        int lineWidth = 0; //记录行的宽度
        int maxLineWidth = 0; //记录最宽的行宽
        int maxItemHeight = 0; //记录一行中item高度最大的高度
        int lineCount = 1;
 
        for (int i = 0; i < count; i++) {
            View view = getChildAt(i);
            measureChild(view, widthMeasureSpec, heightMeasureSpec);
 
            if (lineWidth + view.getMeasuredWidth() > maxWidth) {
                lineCount++;
                if (mMaxLines > 0 && lineCount > mMaxLines) {
                    break;
                }
                contentHeight += mLineMargin;
                contentHeight += maxItemHeight;
                maxItemHeight = 0;
                maxLineWidth = Math.max(maxLineWidth, lineWidth);
                lineWidth = 0;
            }
 
            lineWidth += view.getMeasuredWidth();
            maxItemHeight = Math.max(maxItemHeight, view.getMeasuredHeight());
 
            if (i != count - 1) {
                if (lineWidth + mWordMargin > maxWidth) {
                    // 换行
                    lineCount++;
                    if (mMaxLines > 0 && lineCount > mMaxLines) {
                        break;
                    }
                    contentHeight += mLineMargin;
                    contentHeight += maxItemHeight;
                    maxItemHeight = 0;
                    maxLineWidth = Math.max(maxLineWidth, lineWidth);
                    lineWidth = 0;
                } else {
                    lineWidth += mWordMargin;
                }
            }
        }
 
        contentHeight += maxItemHeight;
        maxLineWidth = Math.max(maxLineWidth, lineWidth);
 
        setMeasuredDimension(measureWidth(widthMeasureSpec, maxLineWidth),
                measureHeight(heightMeasureSpec, contentHeight));
    }
 
    private int measureWidth(int measureSpec, int contentWidth) {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);
 
        if (specMode == MeasureSpec.EXACTLY) {
            result = specSize;
        } else {
            result = contentWidth + getPaddingLeft() + getPaddingRight();
            if (specMode == MeasureSpec.AT_MOST) {
                result = Math.min(result, specSize);
            }
        }
        result = Math.max(result, getSuggestedMinimumWidth());
        return result;
    }
 
    private int measureHeight(int measureSpec, int contentHeight) {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);
 
        if (specMode == MeasureSpec.EXACTLY) {
            result = specSize;
        } else {
            result = contentHeight + getPaddingTop() + getPaddingBottom();
            if (specMode == MeasureSpec.AT_MOST) {
                result = Math.min(result, specSize);
            }
        }
        result = Math.max(result, getSuggestedMinimumHeight());
        return result;
    }
 
    @Override
    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
 
        int x = getPaddingLeft();
        int y = getPaddingTop();
 
        int contentWidth = right - left;
        int maxItemHeight = 0;
        int lineCount = 1;
 
        int count = getChildCount();
        for (int i = 0; i < count; i++) {
            View view = getChildAt(i);
 
            if (contentWidth < x + view.getMeasuredWidth() + getPaddingRight()) {
                lineCount++;
                if (mMaxLines > 0 && lineCount > mMaxLines) {
                    break;
                }
                x = getPaddingLeft();
                y += mLineMargin;
                y += maxItemHeight;
                maxItemHeight = 0;
            }
            view.layout(x, y, x + view.getMeasuredWidth(), y + view.getMeasuredHeight());
            x += view.getMeasuredWidth();
            x += mWordMargin;
            maxItemHeight = Math.max(maxItemHeight, view.getMeasuredHeight());
        }
    }
 
    /*  用于保存View的信息的key  */
    private static final String KEY_SUPER_STATE = "key_super_state";
    private static final String KEY_TEXT_COLOR_STATE = "key_text_color_state";
    private static final String KEY_TEXT_SIZE_STATE = "key_text_size_state";
    private static final String KEY_BG_RES_ID_STATE = "key_bg_res_id_state";
    private static final String KEY_PADDING_STATE = "key_padding_state";
    private static final String KEY_WORD_MARGIN_STATE = "key_word_margin_state";
    private static final String KEY_LINE_MARGIN_STATE = "key_line_margin_state";
    private static final String KEY_SELECT_TYPE_STATE = "key_select_type_state";
    private static final String KEY_MAX_SELECT_STATE = "key_max_select_state";
    private static final String KEY_MIN_SELECT_STATE = "key_min_select_state";
    private static final String KEY_MAX_LINES_STATE = "key_max_lines_state";
    private static final String KEY_INDICATOR_STATE = "key_indicator_state";
    // 由于新版(1.4.0)的标签列表允许设置任何类型的数据,而不仅仅是String。并且标签显示的内容
    // 最终由LabelTextProvider提供,所以LabelsView不再在onSaveInstanceState()和onRestoreInstanceState()
    // 中保存和恢复标签列表的数据。
    private static final String KEY_LABELS_STATE = "key_labels_state";
    private static final String KEY_SELECT_LABELS_STATE = "key_select_labels_state";
    private static final String KEY_COMPULSORY_LABELS_STATE = "key_select_compulsory_state";
 
    @Override
    protected Parcelable onSaveInstanceState() {
 
        Bundle bundle = new Bundle();
        //保存父类的信息
        bundle.putParcelable(KEY_SUPER_STATE, super.onSaveInstanceState());
        //保存标签文字颜色
        if (mTextColor != null) {
            bundle.putParcelable(KEY_TEXT_COLOR_STATE, mTextColor);
        }
        //保存标签文字大小
        bundle.putFloat(KEY_TEXT_SIZE_STATE, mTextSize);
        //保存标签背景 (由于背景改用Drawable,所以不能自动保存和恢复)
//        bundle.putInt(KEY_BG_RES_ID_STATE, mLabelBgResId);
        //保存标签内边距
        bundle.putIntArray(KEY_PADDING_STATE, new int[]{mTextPaddingLeft, mTextPaddingTop,
                mTextPaddingRight, mTextPaddingBottom});
        //保存标签间隔
        bundle.putInt(KEY_WORD_MARGIN_STATE, mWordMargin);
        //保存行间隔
        bundle.putInt(KEY_LINE_MARGIN_STATE, mLineMargin);
        //保存标签的选择类型
        bundle.putInt(KEY_SELECT_TYPE_STATE, mSelectType.value);
        //保存标签的最大选择数量
        bundle.putInt(KEY_MAX_SELECT_STATE, mMaxSelect);
        //保存标签的最少选择数量
        bundle.putInt(KEY_MIN_SELECT_STATE, mMinSelect);
        //保存标签的最大行数
        bundle.putInt(KEY_MAX_LINES_STATE, mMaxLines);
        //保存是否是指示器模式
        bundle.putBoolean(KEY_INDICATOR_STATE, isIndicator);
 
        //保存标签列表
//        if (!mLabels.isEmpty()) {
//            bundle.putStringArrayList(KEY_LABELS_STATE, mLabels);
//        }
        //保存已选择的标签列表
        if (!mSelectLabels.isEmpty()) {
            bundle.putIntegerArrayList(KEY_SELECT_LABELS_STATE, mSelectLabels);
        }
 
        //保存必选项列表
        if (!mCompulsorys.isEmpty()) {
            bundle.putIntegerArrayList(KEY_COMPULSORY_LABELS_STATE, mCompulsorys);
        }
 
        return bundle;
    }
 
    @Override
    protected void onRestoreInstanceState(Parcelable state) {
        if (state instanceof Bundle) {
            Bundle bundle = (Bundle) state;
            //恢复父类信息
            super.onRestoreInstanceState(bundle.getParcelable(KEY_SUPER_STATE));
 
            //恢复标签文字颜色
            ColorStateList color = bundle.getParcelable(KEY_TEXT_COLOR_STATE);
            if (color != null) {
                setLabelTextColor(color);
            }
            //恢复标签文字大小
            setLabelTextSize(bundle.getFloat(KEY_TEXT_SIZE_STATE, mTextSize));
//            //恢复标签背景  (由于背景改用Drawable,所以不能自动保存和恢复)
//            int resId = bundle.getInt(KEY_BG_RES_ID_STATE, mLabelBgResId);
//            if (resId != 0) {
//                setLabelBackgroundResource(resId);
//            }
            //恢复标签内边距
            int[] padding = bundle.getIntArray(KEY_PADDING_STATE);
            if (padding != null && padding.length == 4) {
                setLabelTextPadding(padding[0], padding[1], padding[2], padding[3]);
            }
            //恢复标签间隔
            setWordMargin(bundle.getInt(KEY_WORD_MARGIN_STATE, mWordMargin));
            //恢复行间隔
            setLineMargin(bundle.getInt(KEY_LINE_MARGIN_STATE, mLineMargin));
            //恢复标签的选择类型
            setSelectType(SelectType.get(bundle.getInt(KEY_SELECT_TYPE_STATE, mSelectType.value)));
            //恢复标签的最大选择数量
            setMaxSelect(bundle.getInt(KEY_MAX_SELECT_STATE, mMaxSelect));
            //恢复标签的最少选择数量
            setMinSelect(bundle.getInt(KEY_MIN_SELECT_STATE, mMinSelect));
            //恢复标签的最大行数
            setMaxLines(bundle.getInt(KEY_MAX_LINES_STATE, mMaxLines));
            //恢复是否是指示器模式
            setIndicator(bundle.getBoolean(KEY_INDICATOR_STATE, isIndicator));
 
//            //恢复标签列表
//            ArrayList<String> labels = bundle.getStringArrayList(KEY_LABELS_STATE);
//            if (labels != null && !labels.isEmpty()) {
//                setLabels(labels);
//            }
            //恢复必选项列表
            ArrayList<Integer> compulsory = bundle.getIntegerArrayList(KEY_COMPULSORY_LABELS_STATE);
            if (compulsory != null && !compulsory.isEmpty()) {
                setCompulsorys(compulsory);
            }
            //恢复已选择的标签列表
            ArrayList<Integer> selectLabel = bundle.getIntegerArrayList(KEY_SELECT_LABELS_STATE);
            if (selectLabel != null && !selectLabel.isEmpty()) {
                int size = selectLabel.size();
                int[] positions = new int[size];
                for (int i = 0; i < size; i++) {
                    positions[i] = selectLabel.get(i);
                }
                setSelects(positions);
            }
            return;
        }
        super.onRestoreInstanceState(state);
    }
 
    /**
     * 设置标签列表
     *
     * @param labels
     */
    public void setLabels(List<String> labels) {
        setLabels(labels, new LabelTextProvider<String>() {
            @Override
            public CharSequence getLabelText(TextView label, int position, String data) {
                return data.trim();
            }
        });
    }
 
    /**
     * 设置标签列表,标签列表的数据可以是任何类型的数据,它最终显示的内容由LabelTextProvider根据标签的数据提供。
     *
     * @param labels
     * @param provider
     * @param <T>
     */
    public <T> void setLabels(List<T> labels, LabelTextProvider<T> provider) {
        //清空原有的标签
        innerClearAllSelect();
        removeAllViews();
        mLabels.clear();
 
        if (labels != null) {
            mLabels.addAll(labels);
            int size = labels.size();
            labelsTxt.clear();
            for (int i = 0; i < size; i++) {
                addLabel(labels.get(i), i, provider);
            }
            ensureLabelClickable();
        }
 
        if (mSelectType == SelectType.SINGLE_IRREVOCABLY) {
            setSelects(0);
        }
    }
 
    /**
     * 获取标签列表
     *
     * @return
     */
    public <T> List<T> getLabels() {
        return (List<T>) mLabels;
    }
 
    private <T> void addLabel(T data, int position, LabelTextProvider<T> provider) {
        final TextView label = new TextView(mContext);
        label.setPadding(mTextPaddingLeft, mTextPaddingTop, mTextPaddingRight, mTextPaddingBottom);
        label.setTextSize(TypedValue.COMPLEX_UNIT_PX, mTextSize);
        label.setTextColor(mTextColor != null ? mTextColor : ColorStateList.valueOf(0xFF000000));
        //设置给label的背景(Drawable)是一个Drawable对象的拷贝,
        // 因为如果所有的标签都共用一个Drawable对象,会引起背景错乱。
        label.setBackgroundDrawable(mLabelBg.getConstantState().newDrawable());
        //label通过tag保存自己的数据(data)和位置(position)
        label.setTag(KEY_DATA, data);
        label.setTag(KEY_POSITION, position);
        label.setOnClickListener(this);
        addView(label);
        labelsTxt.add(label);
        label.setText(provider.getLabelText(label, position, data));
    }
 
    /**
     * 确保标签是否能响应事件,如果标签可选或者标签设置了点击事件监听,则响应事件。
     */
    private void ensureLabelClickable() {
        int count = getChildCount();
        for (int i = 0; i < count; i++) {
            TextView label = (TextView) getChildAt(i);
            label.setClickable(mLabelClickListener != null || mSelectType != SelectType.NONE);
        }
    }
 
    @Override
    public void onClick(View v) {
        if (v instanceof TextView) {
            TextView label = (TextView) v;
            if (!isIndicator) {
                if (mSelectType != SelectType.NONE) {
                    if (label.isSelected()) {
                        boolean irrevocable = mSelectType == SelectType.MULTI && mCompulsorys.contains((Integer) label.getTag(KEY_POSITION));
                        irrevocable = irrevocable || (mSelectType == SelectType.MULTI && mSelectLabels.size() <= mMinSelect);
                        irrevocable = irrevocable || mSelectType == SelectType.SINGLE_IRREVOCABLY;
                        if (!irrevocable) {
                            setLabelSelect(label, false);
                        }
                    } else {
                        if (mSelectType == SelectType.SINGLE || mSelectType == SelectType.SINGLE_IRREVOCABLY) {
                            innerClearAllSelect();
                            setLabelSelect(label, true);
                        } else if (mSelectType == SelectType.MULTI
                                && (mMaxSelect <= 0 || mMaxSelect > mSelectLabels.size())) {
                            setLabelSelect(label, true);
                        }
                    }
                }
            }
 
            if (mLabelClickListener != null) {
                mLabelClickListener.onLabelClick(label, label.getTag(KEY_DATA), (int) label.getTag(KEY_POSITION));
            }
        }
    }
 
    private void setLabelSelect(TextView label, boolean isSelect) {
        if (label.isSelected() != isSelect) {
            label.setSelected(isSelect);
            if (isSelect) {
                mSelectLabels.add((Integer) label.getTag(KEY_POSITION));
            } else {
                mSelectLabels.remove((Integer) label.getTag(KEY_POSITION));
            }
            if (mLabelSelectChangeListener != null) {
                mLabelSelectChangeListener.onLabelSelectChange(label, label.getTag(KEY_DATA),
                        isSelect, (int) label.getTag(KEY_POSITION));
            }
        }
    }
 
    /**
     * 取消所有选中的label
     */
    public void clearAllSelect() {
        if (mSelectType != SelectType.SINGLE_IRREVOCABLY) {
            if (mSelectType == SelectType.MULTI && !mCompulsorys.isEmpty()) {
                clearNotCompulsorySelect();
            } else {
                innerClearAllSelect();
            }
        }
    }
 
    private void innerClearAllSelect() {
        int count = getChildCount();
        for (int i = 0; i < count; i++) {
            setLabelSelect((TextView) getChildAt(i), false);
        }
        mSelectLabels.clear();
    }
 
    private void clearNotCompulsorySelect() {
        int count = getChildCount();
        List<Integer> temps = new ArrayList<>();
        for (int i = 0; i < count; i++) {
            if (!mCompulsorys.contains(i)) {
                setLabelSelect((TextView) getChildAt(i), false);
                temps.add(i);
            }
 
        }
        mSelectLabels.removeAll(temps);
    }
 
    /**
     * 设置选中label
     *
     * @param positions
     */
    public void setSelects(List<Integer> positions) {
        if (positions != null) {
            int size = positions.size();
            int[] ps = new int[size];
            for (int i = 0; i < size; i++) {
                ps[i] = positions.get(i);
            }
            setSelects(ps);
        }
    }
 
    /**
     * 设置选中label
     * 与原版不一样 去掉NONE判断 NONE可以选中
     *
     * @param positions
     */
    public void setSelects(int... positions) {
        //if (mSelectType != SelectType.NONE) {
        ArrayList<TextView> selectLabels = new ArrayList<>();
        int count = getChildCount();
        int size = mSelectType == SelectType.SINGLE || mSelectType == SelectType.SINGLE_IRREVOCABLY
                ? 1 : mMaxSelect;
        for (int p : positions) {
            if (p < count) {
                TextView label = (TextView) getChildAt(p);
                if (!selectLabels.contains(label)) {
                    setLabelSelect(label, true);
                    selectLabels.add(label);
                }
                if (size > 0 && selectLabels.size() == size) {
                    break;
                }
            }
        }
 
        for (int i = 0; i < count; i++) {
            TextView label = (TextView) getChildAt(i);
            if (!selectLabels.contains(label)) {
                setLabelSelect(label, false);
            }
        }
        //}
    }
 
    /**
     * 设置必选项,只有在多项模式下,这个方法才有效
     *
     * @param positions
     */
    public void setCompulsorys(List<Integer> positions) {
        if (mSelectType == SelectType.MULTI && positions != null) {
            mCompulsorys.clear();
            mCompulsorys.addAll(positions);
            //必选项发生改变,就要恢复到初始状态。
            innerClearAllSelect();
            setSelects(positions);
        }
    }
 
    /**
     * 设置必选项,只有在多项模式下,这个方法才有效
     *
     * @param positions
     */
    public void setCompulsorys(int... positions) {
        if (mSelectType == SelectType.MULTI && positions != null) {
            List<Integer> ps = new ArrayList<>(positions.length);
            for (int i : positions) {
                ps.add(i);
            }
            setCompulsorys(ps);
        }
    }
 
    /**
     * 获取必选项,
     *
     * @return
     */
    public List<Integer> getCompulsorys() {
        return mCompulsorys;
    }
 
    /**
     * 清空必选项,只有在多项模式下,这个方法才有效
     */
    public void clearCompulsorys() {
        if (mSelectType == SelectType.MULTI && !mCompulsorys.isEmpty()) {
            mCompulsorys.clear();
            //必选项发生改变,就要恢复到初始状态。
            innerClearAllSelect();
        }
    }
 
    /**
     * 获取选中的label(返回的是所有选中的标签的位置)
     *
     * @return
     */
    public List<Integer> getSelectLabels() {
        return mSelectLabels;
    }
 
    /**
     * 获取选中的label(返回的是所头选中的标签的数据)
     *
     * @param <T>
     * @return
     */
    public <T> List<T> getSelectLabelDatas() {
        List<T> list = new ArrayList<>();
        int size = mSelectLabels.size();
        for (int i = 0; i < size; i++) {
            View label = getChildAt(mSelectLabels.get(i));
            Object data = label.getTag(KEY_DATA);
            if (data != null) {
                list.add((T) data);
            }
        }
        return list;
    }
 
    /**
     * 设置标签背景
     *
     * @param resId
     */
    public void setLabelBackgroundResource(int resId) {
        setLabelBackgroundDrawable(getResources().getDrawable(resId));
    }
 
    /**
     * 设置标签背景
     *
     * @param color
     */
    public void setLabelBackgroundColor(int color) {
        setLabelBackgroundDrawable(new ColorDrawable(color));
    }
 
    /**
     * 设置标签背景
     *
     * @param drawable
     */
    public void setLabelBackgroundDrawable(Drawable drawable) {
        mLabelBg = drawable;
        int count = getChildCount();
        for (int i = 0; i < count; i++) {
            TextView label = (TextView) getChildAt(i);
            label.setBackgroundDrawable(mLabelBg.getConstantState().newDrawable());
        }
    }
 
    /**
     * 设置标签内边距
     *
     * @param left
     * @param top
     * @param right
     * @param bottom
     */
    public void setLabelTextPadding(int left, int top, int right, int bottom) {
        if (mTextPaddingLeft != left || mTextPaddingTop != top
                || mTextPaddingRight != right || mTextPaddingBottom != bottom) {
            mTextPaddingLeft = left;
            mTextPaddingTop = top;
            mTextPaddingRight = right;
            mTextPaddingBottom = bottom;
            int count = getChildCount();
            for (int i = 0; i < count; i++) {
                TextView label = (TextView) getChildAt(i);
                label.setPadding(left, top, right, bottom);
            }
        }
    }
 
    public int getTextPaddingLeft() {
        return mTextPaddingLeft;
    }
 
    public int getTextPaddingTop() {
        return mTextPaddingTop;
    }
 
    public int getTextPaddingRight() {
        return mTextPaddingRight;
    }
 
    public int getTextPaddingBottom() {
        return mTextPaddingBottom;
    }
 
    /**
     * 设置标签的文字大小(单位是px)
     *
     * @param size
     */
    public void setLabelTextSize(float size) {
        if (mTextSize != size) {
            mTextSize = size;
            int count = getChildCount();
            for (int i = 0; i < count; i++) {
                TextView label = (TextView) getChildAt(i);
                label.setTextSize(TypedValue.COMPLEX_UNIT_PX, size);
            }
        }
    }
 
    public float getLabelTextSize() {
        return mTextSize;
    }
 
    /**
     * 设置标签的文字颜色
     *
     * @param color
     */
    public void setLabelTextColor(int color) {
        setLabelTextColor(ColorStateList.valueOf(color));
    }
 
    /**
     * 设置标签的文字颜色
     *
     * @param color
     */
    public void setLabelTextColor(ColorStateList color) {
        mTextColor = color;
        int count = getChildCount();
        for (int i = 0; i < count; i++) {
            TextView label = (TextView) getChildAt(i);
            label.setTextColor(mTextColor != null ? mTextColor : ColorStateList.valueOf(0xFF000000));
        }
    }
 
    public ColorStateList getLabelTextColor() {
        return mTextColor;
    }
 
    /**
     * 设置行间隔
     */
    public void setLineMargin(int margin) {
        if (mLineMargin != margin) {
            mLineMargin = margin;
            requestLayout();
        }
    }
 
    public int getLineMargin() {
        return mLineMargin;
    }
 
    /**
     * 设置标签的间隔
     */
    public void setWordMargin(int margin) {
        if (mWordMargin != margin) {
            mWordMargin = margin;
            requestLayout();
        }
    }
 
    public int getWordMargin() {
        return mWordMargin;
    }
 
    /**
     * 设置标签的选择类型
     *
     * @param selectType
     */
    public void setSelectType(SelectType selectType) {
        if (mSelectType != selectType) {
            mSelectType = selectType;
            //选择类型发生改变,就要恢复到初始状态。
            innerClearAllSelect();
 
            if (mSelectType == SelectType.SINGLE_IRREVOCABLY) {
                setSelects(0);
            }
 
            if (mSelectType != SelectType.MULTI) {
                mCompulsorys.clear();
            }
 
            ensureLabelClickable();
        }
    }
 
    public SelectType getSelectType() {
        return mSelectType;
    }
 
    /**
     * 设置最大的选择数量,只有selectType等于MULTI时有效。
     *
     * @param maxSelect
     */
    public void setMaxSelect(int maxSelect) {
        if (mMaxSelect != maxSelect) {
            mMaxSelect = maxSelect;
            if (mSelectType == SelectType.MULTI) {
                //最大选择数量发生改变,就要恢复到初始状态。
                innerClearAllSelect();
            }
        }
    }
 
    public int getMaxSelect() {
        return mMaxSelect;
    }
 
    /**
     * 设置最少的选择数量,只有selectType等于MULTI时有效。
     * 注意:minSelect只限制用户手动点击取消选中时的效果。
     * 调用setSelects()、clearAllSelect()等方法改变标签的选中状态时,不受minSelect影响。
     *
     * @param minSelect
     */
    public void setMinSelect(int minSelect) {
        this.mMinSelect = minSelect;
    }
 
    public int getMinSelect() {
        return mMinSelect;
    }
 
    /**
     * 设置最大行数,小于等于0则不限行数。
     *
     * @param maxLines
     */
    public void setMaxLines(int maxLines) {
        if (mMaxLines != maxLines) {
            mMaxLines = maxLines;
            requestLayout();
        }
    }
 
    public int getMaxLines() {
        return mMaxLines;
    }
 
    /**
     * 设置为指示器模式,只能看,不能手动操作。这种模式下,用户不能通过手动点击改变标签的选中状态。
     * 但是仍然可以通过调用setSelects()、clearAllSelect()等方法改变标签的选中状态。
     *
     * @param indicator
     */
    public void setIndicator(boolean indicator) {
        isIndicator = indicator;
    }
 
    public boolean isIndicator() {
        return isIndicator;
    }
 
    /**
     * 设置能否选中
     *
     * @param index
     */
    public void setLabelsCantClick(int index, boolean enable) {
        if (labelsTxt.size() > index) {
            labelsTxt.get(index).setEnabled(enable);
        }
    }
 
    /**
     * 设置所有均可选中
     */
    public void setLabelsAllClick() {
        for (TextView textView : labelsTxt) {
            textView.setEnabled(true);
        }
    }
 
    /**
     * 设置标签的点击监听
     *
     * @param l
     */
    public void setOnLabelClickListener(OnLabelClickListener l) {
        mLabelClickListener = l;
        ensureLabelClickable();
    }
 
    /**
     * 设置标签的选择监听
     *
     * @param l
     */
    public void setOnLabelSelectChangeListener(OnLabelSelectChangeListener l) {
        mLabelSelectChangeListener = l;
    }
 
    /**
     * sp转px
     */
    public static int sp2px(Context context, float spVal) {
        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
                spVal, context.getResources().getDisplayMetrics());
    }
 
    public interface OnLabelClickListener {
 
        /**
         * @param label    标签
         * @param data     标签对应的数据
         * @param position 标签位置
         */
        void onLabelClick(TextView label, Object data, int position);
    }
 
    public interface OnLabelSelectChangeListener {
 
        /**
         * @param label    标签
         * @param data     标签对应的数据
         * @param isSelect 是否选中
         * @param position 标签位置
         */
        void onLabelSelectChange(TextView label, Object data, boolean isSelect, int position);
    }
 
    /**
     * 给标签提供最终需要显示的数据。因为LabelsView的列表可以设置任何类型的数据,而LabelsView里的每个item的是一
     * 个TextView,只能显示CharSequence的数据,所以LabelTextProvider需要根据每个item的数据返回item最终要显示
     * 的CharSequence。
     *
     * @param <T>
     */
    public interface LabelTextProvider<T> {
 
        /**
         * 根据data和position返回label需要需要显示的数据。
         *
         * @param label
         * @param position
         * @param data
         * @return
         */
        CharSequence getLabelText(TextView label, int position, T data);
    }
}

  标签用法

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
<TabLabelsView
                    android:id="@+id/labels"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:background="@color/white"
                    android:padding="@dimen/dp_10"
                    app:labelBackground="@drawable/labels_bg"
                    app:labelTextColor="@drawable/labels_color"
                    app:labelTextPaddingBottom="5dp"
                    app:labelTextPaddingLeft="10dp"
                    app:labelTextPaddingRight="10dp"
                    app:labelTextPaddingTop="5dp"
                    app:labelTextSize="14sp"
                    app:lineMargin="8dp"
                    app:minSelect="1"
                    app:wordMargin="5dp" />

  自定义属性attrs.xml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
<declare-styleable name="tab_labels_view">
        <attr name="selectType" format="enum">
            <enum name="NONE" value="1" />
            <enum name="SINGLE" value="2" />
            <enum name="SINGLE_IRREVOCABLY" value="3" />
            <enum name="MULTI" value="4" />
        </attr>
        <attr name="maxSelect" format="integer" />
        <attr name="minSelect" format="integer" />
        <attr name="maxLines" format="integer" />
        <attr name="isIndicator" format="boolean" />
        <attr name="labelTextColor" format="reference|color" />
        <attr name="labelTextSize" format="dimension" />
        <attr name="labelTextPaddingLeft" format="dimension" />
        <attr name="labelTextPaddingTop" format="dimension" />
        <attr name="labelTextPaddingRight" format="dimension" />
        <attr name="labelTextPaddingBottom" format="dimension" />
        <attr name="lineMargin" format="dimension" />
        <attr name="wordMargin" format="dimension" />
        <attr name="labelBackground" format="reference|color" />
    </declare-styleable>
    <item name="tag_key_data" type="id"/>
    <item name="tag_key_position" type="id"/>

  添加数据

1
2
3
4
5
6
7
8
TabLabelsView labels;
ArrayList<String> items = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            items.add("数据item" + i);
        }
        labels.setLabels(items);
        labels.setSelectType(TabLabelsView.SelectType.MULTI);
        labels.setLabelsCantClick(5,false);

  

posted @   bg_不够  阅读(128)  评论(0编辑  收藏  举报
相关博文:
阅读排行:
· DeepSeek “源神”启动!「GitHub 热点速览」
· 微软正式发布.NET 10 Preview 1:开启下一代开发框架新篇章
· 我与微信审核的“相爱相杀”看个人小程序副业
· C# 集成 DeepSeek 模型实现 AI 私有化(本地部署与 API 调用教程)
· spring官宣接入deepseek,真的太香了~
历史上的今天:
2021-05-27 MMKV使用笔记
点击右上角即可分享
微信分享提示