使用ViewFlipper实现图片轮播

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public class MainActivity extends AppCompatActivity {     private ViewFlipper flipper;     //背景图片int[] id     private int[] resID = {R.drawable.pic1,R.drawable.pic2,R.drawable.pic3,R.drawable.pic4};       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);           flipper = (ViewFlipper) findViewById(R.id.flipper);           //动态导入的方式为ViewFlipper加入子View         for(int i = 0; i < resID.length ; i++){             flipper.addView(getimageview(resID[i]));         }         //为ViewFlipper去添加动画效果         flipper.setInAnimation(this,R.anim.right_in);         flipper.setOutAnimation(this,R.anim.right_out);         //切换间隔时间         flipper.setFlipInterval(3000);         //开始播放         flipper.startFlipping();     }     private ImageView getimageview(int resID){         ImageView image = new ImageView(this);         image.setBackgroundResource(resID);         return image;     }

　　

手指滑动

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public class MainActivity extends AppCompatActivity {     private ViewFlipper flipper;     //X横坐标     private float startX;     //背景图片int[] id     private int[] resID = {R.drawable.pic1,R.drawable.pic2,R.drawable.pic3,R.drawable.pic4};       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);           flipper = (ViewFlipper) findViewById(R.id.flipper);           //动态导入的方式为ViewFlipper加入子View         for(int i = 0; i < resID.length ; i++){             flipper.addView(getimageview(resID[i]));         }     }     private ImageView getimageview(int resID){         ImageView image = new ImageView(this);         image.setBackgroundResource(resID);         return image;     }       //手指滑动     @Override     public boolean onTouchEvent(MotionEvent event) {        switch (event.getAction()){            case MotionEvent.ACTION_DOWN:{                startX = event.getX();                break;            }            case MotionEvent.ACTION_MOVE:{                //向右滑动                  break;            }            case MotionEvent.ACTION_UP:{                if(event.getX() - startX  > 100){                    flipper.setInAnimation(this,R.anim.left_in);                    flipper.setOutAnimation(this, R.anim.left_out);                    flipper.showPrevious();                  //显示前一项                }                  //向左滑动                if(startX - event.getX() > 100){                    flipper.setInAnimation(this,R.anim.right_in);                    flipper.setOutAnimation(this,R.anim.right_out);                    flipper.showNext();                }                break;            }        }           return super.onTouchEvent(event);     }