自定义控件：（动画）（特效）AllAppList平面矩阵3D效果
main.xml
<?xml version="1.0" encoding="utf-8"?> <com.hhj.appListDemo.ScrollLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/ScrollLayoutTest" android:layout_width="fill_parent" android:layout_height="fill_parent"> </com.hhj.appListDemo.ScrollLayout>
app_item.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:gravity="center_horizontal" android:layout_width="80dp" android:paddingTop="5dp" android:layout_height="100dp"> <ImageView android:id="@+id/ivAppIcon" android:scaleType="fitCenter" android:layout_gravity="center_horizontal|top" android:layout_width="48dp" android:layout_height="48dp" /> <TextView android:id="@+id/tvAppName" android:layout_width="74dp" android:ellipsize="marquee" android:textColor="#FFFF" android:layout_height="50dp" android:gravity="center_horizontal|center_vertical" /> </LinearLayout>
AllAppList.java (主Activity)
package com.hhj.appListDemo; import java.util.List; import android.app.Activity; import android.content.ActivityNotFoundException; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.graphics.Color; import android.os.Bundle; import android.util.Log; import android.view.KeyEvent; import android.view.View; import android.view.Window; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.GridView; import android.widget.Toast; public class AllAppList extends Activity { private static final String TAG = "ScrollLayoutTest"; private ScrollLayout mScrollLayout; private static final float APP_PAGE_SIZE = 16.0f; private Context mContext; final private int[] color = { Color.BLUE, Color.GRAY, Color.CYAN, Color.GREEN, Color.LTGRAY, Color.MAGENTA, Color.RED }; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); this.requestWindowFeature(Window.FEATURE_NO_TITLE); mContext = this; setContentView(R.layout.main); mScrollLayout = (ScrollLayout) findViewById(R.id.ScrollLayoutTest); initViews(); } public void initViews() { final PackageManager packageManager = getPackageManager(); final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); mainIntent.addCategory(Intent.CATEGORY_LAUNCHER); // get all apps final List<ResolveInfo> apps = packageManager.queryIntentActivities( mainIntent, 0); System.out.println("apps---->" + apps.size()); // the total pages final int PageCount = (int) Math.ceil(apps.size() / APP_PAGE_SIZE); System.out.println("PageCount--->" + PageCount); Log.e(TAG, "size:" + apps.size() + " page:" + PageCount); for (int i = 0; i < PageCount; i++) { GridView appPage = new GridView(this); // get the "i" page data appPage.setAdapter(new AppAdapter(this, apps, i)); appPage.setNumColumns(4); appPage.setOnItemClickListener(listener); // appPage.setBackgroundColor(color[i]); mScrollLayout.addView(appPage); } } public OnItemClickListener listener = new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // TODO Auto-generated method stub ResolveInfo appInfo = (ResolveInfo) parent .getItemAtPosition(position); Intent mainIntent = mContext .getPackageManager() .getLaunchIntentForPackage(appInfo.activityInfo.packageName); mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); try { // launcher the package mContext.startActivity(mainIntent); } catch (ActivityNotFoundException noFound) { Toast.makeText(mContext, "Package not found!", Toast.LENGTH_SHORT).show(); } } }; @Override protected void onDestroy() { // TODO Auto-generated method stub android.os.Process.killProcess(android.os.Process.myPid()); super.onDestroy(); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { // TODO Auto-generated method stub if (keyCode == KeyEvent.KEYCODE_BACK) { finish(); return true; } return super.onKeyDown(keyCode, event); } }
AppAdapter.java (列表适配器)
package com.hhj.appListDemo; import java.util.ArrayList; import java.util.List; import android.content.Context; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.TextView; public class AppAdapter extends BaseAdapter { private List<ResolveInfo> mList; private Context mContext; public static final int APP_PAGE_SIZE = 16; private PackageManager pm; public AppAdapter(Context context, List<ResolveInfo> list, int page) { mContext = context; pm = context.getPackageManager(); mList = new ArrayList<ResolveInfo>(); int i = page * APP_PAGE_SIZE; int iEnd = i + APP_PAGE_SIZE; while ((i < list.size()) && (i < iEnd)) { mList.add(list.get(i)); i++; } } public int getCount() { // TODO Auto-generated method stub return mList.size(); } public Object getItem(int position) { // TODO Auto-generated method stub return mList.get(position); } public long getItemId(int position) { // TODO Auto-generated method stub return position; } public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub ResolveInfo appInfo = mList.get(position); AppItem appItem; if (convertView == null) { // 初始化 与findViewById类型，只不过findViewById是对控件，而这是对这个布局 View v = LayoutInflater.from(mContext).inflate(R.layout.app_item, null); appItem = new AppItem(); // 分别用来存储app的图标和名字 appItem.mAppIcon = (ImageView) v.findViewById(R.id.ivAppIcon); appItem.mAppName = (TextView) v.findViewById(R.id.tvAppName); v.setTag(appItem); convertView = v; } else { appItem = (AppItem) convertView.getTag(); } // set the icon appItem.mAppIcon.setImageDrawable(appInfo.loadIcon(pm)); // set the app name appItem.mAppName.setText(appInfo.loadLabel(pm)); return convertView; } public static class AppItem { ImageView mAppIcon; TextView mAppName; } }
ScrollLayout.java (自定义动画控件)
package com.hhj.appListDemo; import java.util.Random; import com.hhj.appListDemo.AppAdapter.AppItem; import android.content.Context; import android.content.pm.ResolveInfo; import android.graphics.Bitmap; import android.graphics.Camera; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.PaintFlagsDrawFilter; import android.graphics.drawable.BitmapDrawable; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.VelocityTracker; import android.view.View; import android.view.ViewConfiguration; import android.view.ViewGroup; import android.view.animation.Transformation; import android.widget.GridView; import android.widget.ImageView; import android.widget.ListAdapter; import android.widget.Scroller; public class ScrollLayout extends ViewGroup { private boolean type; /** 沿Y轴正方向看，数值减1时动画逆时针旋转。 */ public static final boolean ROTATE_DECREASE = true; /** 沿Y轴正方向看，数值减1时动画顺时针旋转。 */ public static final boolean ROTATE_INCREASE = false; /** 值为true时可明确查看动画的旋转方向。 */ public static final boolean DEBUG = false; private static final String TAG = "ScrollLayout"; // 用于滑动的类 private Scroller mScroller; // 用来跟踪触摸速度的类 private VelocityTracker mVelocityTracker; // 当前的屏幕视图 private int mCurScreen; // 默认的显示视图 private int mDefaultScreen = 0; // 无事件的状态 private static final int TOUCH_STATE_REST = 0; // 处于拖动的状态 private static final int TOUCH_STATE_SCROLLING = 1; // 滑动的速度 private static final int SNAP_VELOCITY = 600; private static int mNum; private int mTouchState = TOUCH_STATE_REST; private int mTouchSlop; private float mLastMotionX; // 用来处理立体效果的类 private Camera mCamera; private Matrix mMatrix; /**旋转的角度*/ private float angle = 180; public ScrollLayout(Context context, AttributeSet attrs) { this(context, attrs, 0); // TODO Auto-generated constructor stub } // 在构造器中初始化 public ScrollLayout(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // TODO Auto-generated constructor stub mScroller = new Scroller(context); mCurScreen = mDefaultScreen; mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop(); mCamera = new Camera(); mMatrix = new Matrix(); } /* * * 为子View指定位置 */ protected void onLayout(boolean changed, int left, int top, int right, int bottom) { // TODO Auto-generated method stub Log.e(TAG, "onLayout"); if (changed) { int childLeft = 0; final int childCount = getChildCount(); for (int i = 0; i < childCount; i++) { final View childView = getChildAt(i); if (childView.getVisibility() != View.GONE) { final int childWidth = childView.getMeasuredWidth(); childView.layout(childLeft, 0, childLeft + childWidth, childView.getMeasuredHeight()); childLeft += childWidth; } } } } // 重写此方法用来计算高度和宽度 @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { Log.e(TAG, "onMeasure"); super.onMeasure(widthMeasureSpec, heightMeasureSpec); final int width = MeasureSpec.getSize(widthMeasureSpec); final int widthMode = MeasureSpec.getMode(widthMeasureSpec); // Exactly：width代表的是精确的尺寸 // AT_MOST：width代表的是最大可获得的空间 if (widthMode != MeasureSpec.EXACTLY) { throw new IllegalStateException( "ScrollLayout only canmCurScreen run at EXACTLY mode!"); } final int heightMode = MeasureSpec.getMode(heightMeasureSpec); if (heightMode != MeasureSpec.EXACTLY) { throw new IllegalStateException( "ScrollLayout only can run at EXACTLY mode!"); } // The children are given the same width and height as the scrollLayout // 得到多少页(子View)并设置他们的宽和高 final int count = getChildCount(); for (int i = 0; i < count; i++) { getChildAt(i).measure(widthMeasureSpec, heightMeasureSpec); } // Log.e(TAG, "moving to screen "+mCurScreen); scrollTo(mCurScreen * width, 0); } /** * 当进行View滑动时，会导致当前的View无效，该函数的作用是对View进行重新绘制 调用drawScreen函数 */ protected void dispatchDraw(Canvas canvas) { // TODO Auto-generated method stub final long drawingTime = getDrawingTime(); final int count = getChildCount(); //Log.i("HHJ", "125"+" drawingTime:"+drawingTime+" count:"+count); for (int i = 0; i < count; i++) { drawScreenCube(canvas, i, drawingTime,mNum);//mNum } } class BigStone { //图片 Bitmap bitmap; //角度 int angle; //x坐标 float x; //y坐标 float y; //是否可见 String text; boolean isVisible = true; } /** * 计算每个点的坐标 */ private void computeCoordinates() { BigStone stone; for(int index=0; index<STONE_COUNT; index++) { stone = mStones[index]; stone.x = mPointX+ (float)(mRadius * Math.cos(stone.angle*Math.PI/90));//stone.angle*Math.PI/180(弧度=角度*3.14) stone.y = mPointY+ (float)(mRadius * Math.sin(stone.angle*Math.PI/90)); } } //stone列表 private BigStone[] mStones; //数目 private int STONE_COUNT ; /**圆心坐标*/ private int mPointX=0, mPointY=0; /**半径*/ private int mRadius = 120; /**每两个点间隔的角度*/ private int mDegreeDelta; private Context context; private Paint mPaint = new Paint(); /* @Override public boolean dispatchTouchEvent(MotionEvent event) { if(event.getAction() == MotionEvent.ACTION_DOWN){ firstDegree =mStones[0].angle; } return true; }*/ /** * 立体效果的实现函数 ,screen为哪一个子View 立方体效果 * */ public void drawScreenCube(Canvas canvas, int screen, long drawingTime ,int select) { canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG|Paint.FILTER_BITMAP_FLAG)); if(select==1){//圆圈 super.dispatchDraw(canvas); }else if(select==2){//层叠透明变亮 final int width = getWidth(); final int scrollWidth = screen * width; final int scrollX = this.getScrollX(); if(scrollWidth > scrollX + width || scrollWidth + width < scrollX) { return; } final View child;// = getChildAt(screen); float scaleX = 1f;/*设置矩阵大小*/ float scaleY = 1f; float centerX= (scrollWidth < scrollX)?scrollWidth + width:scrollWidth; //中心位置 float centerY=getHeight()/2; if(screen==mCurScreen+1 && getChildAt(mCurScreen+1)!=null){ child = getChildAt(mCurScreen+1); Log.i("HHJ", "child:"+child.toString()); scaleX = (float) (((getScrollX()-(mCurScreen*getMeasuredWidth()))) * (1.0 / getMeasuredWidth())); scaleY = scaleX; centerX = (scrollWidth < scrollX)?scrollWidth + width:scrollWidth-getMeasuredWidth()/2; centerY = getHeight()/2; }else if(screen==mCurScreen-1 && getChildAt(mCurScreen-1)!=null){ child = getChildAt(mCurScreen-1); }else { child = getChildAt(mCurScreen); if(scrollX<mCurScreen*getMeasuredWidth()){ scaleX = (float) (Math.abs(getScrollX()-mCurScreen*getMeasuredWidth()) * (1.0 / getMeasuredWidth())-1); scaleY = scaleX; centerX = (scrollWidth < scrollX)?scrollWidth + width:scrollWidth-getMeasuredWidth()/2; centerY = getHeight()/2; } } final Camera camera = mCamera; final Matrix matrix = mMatrix; canvas.save(); camera.save(); camera.rotateY(-0); camera.getMatrix(matrix); camera.restore(); matrix.preScale(Math.abs(scaleX),Math.abs(scaleY));//大小 //matrix.postScale(scaleX, scaleY); matrix.preTranslate(-centerX, -centerY); //中心位置 matrix.postTranslate(centerX, centerY); canvas.concat(matrix); drawChild(canvas, child, drawingTime); canvas.restore(); }else if(select==3){//波浪情况 final int width = getWidth(); final int scrollWidth = screen * width; final int scrollX = this.getScrollX(); if(scrollWidth > scrollX + width || scrollWidth + width < scrollX) { return; } final View child;// = getChildAt(screen); float scaleX = 1f; float scaleY = 1f; if(screen==mCurScreen+1 && getChildAt(mCurScreen+1)!=null){ child = getChildAt(mCurScreen+1); scaleX = (float) ((float) ((getScrollX()-(mCurScreen*getMeasuredWidth()))) * (1.0 / getMeasuredWidth())); scaleY = scaleX; }else if(screen==mCurScreen-1 && getChildAt(mCurScreen-1)!=null){ child = getChildAt(mCurScreen-1); scaleX = (float) ((float) ((getScrollX()-(mCurScreen*getMeasuredWidth()))) * (1.0 / getMeasuredWidth())); scaleY = scaleX; }else { child = getChildAt(mCurScreen); } final float centerX = (scrollWidth < scrollX)?scrollWidth + width:scrollWidth; final float centerY = getHeight()/2; final Camera camera = mCamera; final Matrix matrix = mMatrix; canvas.save(); camera.save(); camera.rotateY(-0); camera.getMatrix(matrix); camera.restore(); matrix.preScale(Math.abs(scaleX), Math.abs(scaleY)); //matrix.postScale(scaleX, scaleY); matrix.preTranslate(-centerX, -centerY); matrix.postTranslate(centerX, centerY); canvas.concat(matrix); drawChild(canvas, child, drawingTime); canvas.restore(); }else if(select==4){//立体翻转 final int width = getWidth(); final int scrollWidth = screen * width; final int scrollX = this.getScrollX(); if(scrollWidth > scrollX + width || scrollWidth + width < scrollX) { return; } final View child = getChildAt(screen); final int faceIndex = screen; final float faceDegree = (this.getScrollX() - faceIndex *480f)*0.1875f; final float currentDegree = getScrollX() * (angle / getMeasuredWidth()); if(faceDegree > 90 || faceDegree < -90) { return; } final float centerX = (scrollWidth < scrollX)?scrollWidth + width:scrollWidth; final float centerY = getHeight()/2; final Camera camera = mCamera; final Matrix matrix = mMatrix; canvas.save(); camera.save(); camera.rotateY(-faceDegree); camera.getMatrix(matrix); camera.restore(); matrix.preTranslate(-centerX, -centerY); matrix.postTranslate(centerX, centerY); canvas.concat(matrix); drawChild(canvas, child, drawingTime); canvas.restore(); }else if (select==5){ // 得到当前子View的宽度 final int width = getWidth(); /**当前滑动到view视图在viewgroup里面到位置 scrollWidth = 屏数*该view到宽度 */ final int scrollWidth = screen * width; /**View水平方向的偏移量（像素）*/ final int scrollX = this.getScrollX(); if (scrollWidth > scrollX + width || scrollWidth + width < scrollX) { return; } final View child = getChildAt(screen); final int faceIndex = screen; /** * 1.解锁下这里到意思 由于当前一屏所充满屏幕宽度（假如所480*800）480 * 2. 180/getMeasuredWidth() 当前屏总共分为180度 比上 当前屏总宽度 意思说屏每一个像素到滑动占多少角度 意思所说180/480=0.375 每移动一个像素就所要转动0.375个角度 * 3. getScrollX() 由于这个所一个viewgroup 上滑动到偏移量 ,所有等有所将viewgroup翻转了很多个180 * 等于说所第一屏所0～180度 第二屏所 180 ～ 360 度 第三屏所 360～540度 依次将viewgroup翻转到角度而已 * */ final float currentDegree = getScrollX() * (angle / getMeasuredWidth()); /** * 1.当前翻转到角度 currentDegree-当前屏数*180 * 2.这里这样一减当前到滑屏度数就控制在-180～0度之间了 * 3.让后在加上下面一个if判断，是将当前一屏与屏成九十度到时候以后的滑动就注销掉老 * **/ final float faceDegree = currentDegree - faceIndex * angle; if (faceDegree > 90 || faceDegree < -90) { return; } //旋转的x轴中心位置 final float centerX = (scrollWidth < scrollX) ? scrollWidth + width: scrollWidth; Log.i("HHJ", "centerX:"+centerX+" scrollWidth:"+scrollWidth+" scrollX:"+scrollX); //旋转的y轴中心位置 final float centerY = getHeight() / 2; final Camera camera = mCamera; final Matrix matrixX = mMatrix; canvas.save(); camera.save(); camera.rotateY(-faceDegree); camera.getMatrix(matrixX); camera.restore(); matrixX.preTranslate(-centerX, -centerY);//特效处理的中心 matrixX.postTranslate(centerX, centerY); canvas.concat(matrixX); drawChild(canvas, child, drawingTime); canvas.restore(); }else { super.dispatchDraw(canvas); } } /** * 把中心点放到中心处 * @param canvas * @param bitmap * @param left * @param top */ void drawInCenter(Canvas canvas, Bitmap bitmap, float left, float top,String text) { canvas.drawPoint(left, top, mPaint); Log.i("HHJ","bitmap==null:"+(bitmap==null)); canvas.drawBitmap(bitmap, left-bitmap.getWidth()/2, top-bitmap.getHeight()/2, null); canvas.drawText(text,left-bitmap.getWidth()/2+2, top+bitmap.getHeight()/2+8, mPaint); canvas.restore(); } /** * 根据目前的位置滚动到下一个视图位置. */ public void snapToDestination() { final int screenWidth = getWidth(); // 根据View的宽度以及滑动的值来判断是哪个View final int destScreen = (getScrollX() + screenWidth / 2) / screenWidth; snapToScreen(destScreen); } public void snapToScreen(int whichScreen) { // get the valid layout page whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1)); if (getScrollX() != (whichScreen * getWidth())) { final int delta = whichScreen * getWidth() - getScrollX(); mScroller.startScroll(getScrollX(), 0, delta, 0, Math.abs(delta) * 2); mCurScreen = whichScreen; invalidate(); // 重新布局 } } public void setToScreen(int whichScreen) { whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1)); mCurScreen = whichScreen; scrollTo(whichScreen * getWidth(), 0); } public int getCurScreen() { return mCurScreen; } @Override public void computeScroll() { // TODO Auto-generated method stub if (mScroller.computeScrollOffset()) { //Log.i("HHJ", "209"+mScroller.computeScrollOffset()); scrollTo(mScroller.getCurrX(), mScroller.getCurrY()); postInvalidate(); } } public boolean onTouchEvent(MotionEvent event) { // TODO Auto-generated method stub if (mVelocityTracker == null) { // 使用obtain方法得到VelocityTracker的一个对象 mVelocityTracker = VelocityTracker.obtain(); } // 将当前的触摸事件传递给VelocityTracker对象 mVelocityTracker.addMovement(event); // 得到触摸事件的类型 final int action = event.getAction(); final float x = event.getX(); switch (action) { case MotionEvent.ACTION_DOWN: Log.e(TAG, "event down!"); if (!mScroller.isFinished()) { mScroller.abortAnimation(); } mLastMotionX = x; break; case MotionEvent.ACTION_MOVE: int deltaX = (int) (mLastMotionX - x); mLastMotionX = x; scrollBy(deltaX, 0); break; case MotionEvent.ACTION_UP: Log.e(TAG, "event : up"); // if (mTouchState == TOUCH_STATE_SCROLLING) { final VelocityTracker velocityTracker = mVelocityTracker; // 计算当前的速度 velocityTracker.computeCurrentVelocity(1000); // 获得当前的速度 int velocityX = (int) velocityTracker.getXVelocity(); if (velocityX > SNAP_VELOCITY && mCurScreen > 0) { // Fling enough to move left snapToScreen(mCurScreen - 1); } else if (velocityX < -SNAP_VELOCITY && mCurScreen < getChildCount() - 1) { // Fling enough to move right snapToScreen(mCurScreen + 1); } else { snapToDestination(); } if (mVelocityTracker != null) { mVelocityTracker.recycle(); mVelocityTracker = null; } // } mTouchState = TOUCH_STATE_REST; break; case MotionEvent.ACTION_CANCEL: mTouchState = TOUCH_STATE_REST; break; } return true; } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { // TODO Auto-generated method stub Log.e(TAG, "onInterceptTouchEvent-slop:" + mTouchSlop); final int action = ev.getAction(); if ((action == MotionEvent.ACTION_MOVE) && (mTouchState != TOUCH_STATE_REST)) { return true; } final float x = ev.getX(); switch (action) { case MotionEvent.ACTION_MOVE: final int xDiff = (int) Math.abs(mLastMotionX - x); if (xDiff > mTouchSlop) { mTouchState = TOUCH_STATE_SCROLLING; } break; case MotionEvent.ACTION_DOWN: mNum = new Random().nextInt(10); mLastMotionX = x; mTouchState = mScroller.isFinished() ? TOUCH_STATE_REST : TOUCH_STATE_SCROLLING; break; case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: mTouchState = TOUCH_STATE_REST; break; } return mTouchState != TOUCH_STATE_REST; } }
DEMO完整路径下载：http://download.csdn.net/detail/androidsj/5537231
【滑动的时候九宫格图标变成原形】
package com.hhj.allApp; import java.util.Random; import com.hhj.allApp.AppAdapter.AppItem; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Camera; import android.graphics.Canvas; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.drawable.BitmapDrawable; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.VelocityTracker; import android.view.View; import android.view.ViewConfiguration; import android.view.ViewGroup; import android.widget.GridView; import android.widget.Scroller; public class ScrollLayout extends ViewGroup { private static final String TAG = "HHJ"; // 用于滑动的类 private Scroller mScroller; // 用来跟踪触摸速度的类 private VelocityTracker mVelocityTracker; // 当前的屏幕视图 private int mCurScreen; // 默认的显示视图 private int mDefaultScreen = 0; // 无事件的状态 private static final int TOUCH_STATE_REST = 0; // 处于拖动的状态 private static final int TOUCH_STATE_SCROLLING = 1; // 滑动的速度 private static final int SNAP_VELOCITY = 600; private int mTouchState = TOUCH_STATE_REST; private int mTouchSlop; private float mLastMotionX; // 用来处理立体效果的类 private Camera mCamera; private Matrix mMatrix; // 旋转的角度 private float angle = 100; private int mNum; Paint mPaint = new Paint(); private Context mContext; public ScrollLayout(Context context, AttributeSet attrs) { this(context, attrs, 0); mContext = context; // TODO Auto-generated constructor stub } // 在构造器中初始化 public ScrollLayout(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // TODO Auto-generated constructor stub mScroller = new Scroller(context); mCurScreen = mDefaultScreen; mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop(); mCamera = new Camera(); mMatrix = new Matrix(); } /* * * 为子View指定位置 */ protected void onLayout(boolean changed, int left, int top, int right, int bottom) { // TODO Auto-generated method stub Log.e(TAG, "onLayout"); if (changed) { int childLeft = 0; final int childCount = getChildCount(); for (int i = 0; i < childCount; i++) { final View childView = getChildAt(i); if (childView.getVisibility() != View.GONE) { final int childWidth = childView.getMeasuredWidth(); childView.layout(childLeft, 0, childLeft + childWidth, childView.getMeasuredHeight()); childLeft += childWidth; } } } } // 重写此方法用来计算高度和宽度 @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { Log.e(TAG, "onMeasure"); super.onMeasure(widthMeasureSpec, heightMeasureSpec); final int width = MeasureSpec.getSize(widthMeasureSpec); final int widthMode = MeasureSpec.getMode(widthMeasureSpec); // Exactly：width代表的是精确的尺寸 // AT_MOST：width代表的是最大可获得的空间 if (widthMode != MeasureSpec.EXACTLY) { throw new IllegalStateException( "ScrollLayout only canmCurScreen run at EXACTLY mode!"); } final int heightMode = MeasureSpec.getMode(heightMeasureSpec); if (heightMode != MeasureSpec.EXACTLY) { throw new IllegalStateException( "ScrollLayout only can run at EXACTLY mode!"); } // The children are given the same width and height as the scrollLayout // 得到多少页(子View)并设置他们的宽和高 final int count = getChildCount(); for (int i = 0; i < count; i++) { getChildAt(i).measure(widthMeasureSpec, heightMeasureSpec); } // Log.e(TAG, "moving to screen "+mCurScreen); scrollTo(mCurScreen * width, 0); } /* * 当进行View滑动时，会导致当前的View无效，该函数的作用是对View进行重新绘制 调用drawScreen函数 */ protected void dispatchDraw(Canvas canvas) { //Log.i(TAG, "dispatchDraw"); final long drawingTime = getDrawingTime(); final int count = getChildCount(); for (int i = 0; i < count; i++) { drawScreen(canvas, i, drawingTime,1);//mNum } } BigStone[] mStones; /**圆心坐标*/ int mPointX=0, mPointY=0; /**定义一个圆的半径*/ int mRadius = 180; /**定义一个陀螺的半径*/ int[] mmRadius = {30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180}; /**每两个点间隔的角度*/ int mDegreeDelta; /**是否在拖动*/ boolean isDrag=false; public void drawScreen(Canvas canvas, int screen, long drawingTime,int selsect) { if(selsect == 1){ //圆 Log.i(TAG, "isDrag:"+isDrag+" "+getScrollX()); if(isDrag){ GridView gridView = (GridView) getChildAt(screen); int width = getWidth(); int height = getHeight(); int screenCount = gridView.getChildCount(); mStones = new BigStone[screenCount];; mPointX = screen*width+width/2; mPointY =height/2; BigStone stone; int angle = 0; mDegreeDelta = 180/screenCount; for(int index=0; index<screenCount; index++) { stone = new BigStone(); stone.angle = angle; AppItem info = (AppItem) gridView.getChildAt(index).getTag();//将得到的icon图片赋值给图标 BitmapDrawable bd = (BitmapDrawable)info.mAppIcon.getDrawable(); stone.text = "" +info.mAppName.getText().toString(); stone.bitmap = bd.getBitmap(); angle += mDegreeDelta; mStones[index] = stone; } BigStone stoneInit; for(int index=0; index<screenCount; index++) { stoneInit = mStones[index]; stoneInit.x = mPointX+ (float)(mRadius * Math.cos(stoneInit.angle*Math.PI/90));//stone.angle*Math.PI/180(弧度=角度*3.14) stoneInit.y = mPointY+ (float)(mRadius * Math.sin(stoneInit.angle*Math.PI/90)); } for(int index=0; index<screenCount; index++) { canvas.drawPoint(mStones[index].x, mStones[index].y, mPaint); canvas.drawBitmap(mStones[index].bitmap, mStones[index].x-mStones[index].bitmap.getWidth()/2, mStones[index].y-mStones[index].bitmap.getHeight()/2, null); canvas.drawText(mStones[index].text,mStones[index].x-mStones[index].bitmap.getWidth()/2+2, mStones[index].y+mStones[index].bitmap.getHeight()/2+8, mPaint); } }else{ super.dispatchDraw(canvas); } } else if(selsect==2){ // 得到当前子View的宽度 final int width = getWidth(); final int scrollWidth = screen * width; final int scrollX = this.getScrollX(); if (scrollWidth > scrollX + width || scrollWidth + width < scrollX) { return; } final View child = getChildAt(screen); final int faceIndex = screen; final float currentDegree = getScrollX() * (angle / getMeasuredWidth()); final float faceDegree = currentDegree - faceIndex * angle; if (faceDegree > 90 || faceDegree < -90) { return; } final float centerX = (scrollWidth < scrollX) ? scrollWidth + width : scrollWidth; final float centerY = getHeight() / 2; final Camera camera = mCamera; final Matrix matrix = mMatrix; canvas.save(); camera.save(); camera.rotateY(-faceDegree); camera.getMatrix(matrix); camera.restore(); matrix.preTranslate(-centerX, -centerY); matrix.postTranslate(centerX, centerY); canvas.concat(matrix); drawChild(canvas, child, drawingTime); canvas.restore(); } } /** * 根据目前的位置滚动到下一个视图位置. */ public void snapToDestination() { final int screenWidth = getWidth(); // 根据View的宽度以及滑动的值来判断是哪个View final int destScreen = (getScrollX() + screenWidth / 2) / screenWidth; snapToScreen(destScreen); } public void snapToScreen(int whichScreen) { // get the valid layout page whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1)); if (getScrollX() != (whichScreen * getWidth())) { final int delta = whichScreen * getWidth() - getScrollX(); mScroller.startScroll(getScrollX(), 0, delta, 0, Math.abs(delta) * 2); mCurScreen = whichScreen; invalidate(); // 重新布局 } } public void setToScreen(int whichScreen) { whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1)); mCurScreen = whichScreen; scrollTo(whichScreen * getWidth(), 0); } public int getCurScreen() { return mCurScreen; } @Override public void computeScroll() { // TODO Auto-generated method stub if (mScroller.computeScrollOffset()) { scrollTo(mScroller.getCurrX(), mScroller.getCurrY()); postInvalidate(); } } public boolean onTouchEvent(MotionEvent event) { // TODO Auto-generated method stub //Log.i(TAG, "onTouchEvent"); if (mVelocityTracker == null) { // 使用obtain方法得到VelocityTracker的一个对象 mVelocityTracker = VelocityTracker.obtain(); } // 将当前的触摸事件传递给VelocityTracker对象 mVelocityTracker.addMovement(event); // 得到触摸事件的类型 final int action = event.getAction(); final float x = event.getX(); switch (action) { case MotionEvent.ACTION_DOWN: if (!mScroller.isFinished()) { mScroller.abortAnimation(); } mLastMotionX = x; break; case MotionEvent.ACTION_MOVE: isDrag = true; int deltaX = (int) (mLastMotionX - x); mLastMotionX = x; scrollBy(deltaX, 0); break; case MotionEvent.ACTION_UP: isDrag = false; //Log.e(TAG, "event : up"); // if (mTouchState == TOUCH_STATE_SCROLLING) { final VelocityTracker velocityTracker = mVelocityTracker; // 计算当前的速度 velocityTracker.computeCurrentVelocity(1000); // 获得当前的速度 int velocityX = (int) velocityTracker.getXVelocity(); if (velocityX > SNAP_VELOCITY && mCurScreen > 0) { // Fling enough to move left snapToScreen(mCurScreen - 1); } else if (velocityX < -SNAP_VELOCITY && mCurScreen < getChildCount() - 1) { // Fling enough to move right snapToScreen(mCurScreen + 1); } else { snapToDestination(); } if (mVelocityTracker != null) { mVelocityTracker.recycle(); mVelocityTracker = null; } // } mTouchState = TOUCH_STATE_REST; break; case MotionEvent.ACTION_CANCEL: mTouchState = TOUCH_STATE_REST; break; } return true; } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { // TODO Auto-generated method stub //Log.i(TAG, "onInterceptTouchEvent-slop:"); final int action = ev.getAction(); if ((action == MotionEvent.ACTION_MOVE) && (mTouchState != TOUCH_STATE_REST)) { return true; } final float x = ev.getX(); switch (action) { case MotionEvent.ACTION_MOVE: final int xDiff = (int) Math.abs(mLastMotionX - x); if (xDiff > mTouchSlop) { mTouchState = TOUCH_STATE_SCROLLING; } break; case MotionEvent.ACTION_DOWN: mNum = new Random().nextInt(5); mLastMotionX = x; mTouchState = mScroller.isFinished() ? TOUCH_STATE_REST : TOUCH_STATE_SCROLLING; break; case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: mTouchState = TOUCH_STATE_REST; break; } return mTouchState != TOUCH_STATE_REST; } class BigStone { //图片 Bitmap bitmap; //角度 int angle; //x坐标 float x; //y坐标 float y; //是否可见 String text; boolean isVisible = true; } }
