Android实现去哪儿携程地址互换效果

public class AddressActivity extends AppCompatActivity { private TextView mTvLeft; private TextView mTvRight; private Button mBtn; private RelativeLayout mRlLeft; private RelativeLayout mRlRight; private WindowManager mWindowManager; private int[] mLeftLocation; private int[] mRightLocation; private Bitmap mLeftCacheBitmap; private Bitmap mRightCacheBitmap; private LinearLayout mLl; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_address);  mWindowManager = getWindowManager();  mTvLeft = (TextView) findViewById(R.id.tv_left);  mTvRight = (TextView) findViewById(R.id.tv_right);  mRlLeft = (RelativeLayout) findViewById(R.id.rl_left);  mRlRight = (RelativeLayout) findViewById(R.id.rl_right);  mLl = (LinearLayout) findViewById(R.id.ll);  mBtn = (Button) findViewById(R.id.btn);  mBtn.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View view) {    textAnim();    mBtn.setEnabled(false);   }  }); } /**  * 左边tv的镜像view  */ private ImageView copyViewLeft; /**  * 右边tv的镜像view  */ private ImageView copyViewRight; /**  * 获取tv的属性,计算偏移量,  */ private void textAnim() {  //获取tv控件距离父控件的位置  int leftRight = mTvLeft.getRight();  int rightLeft = mTvRight.getLeft();  //包裹右侧tv距离父控件的距离  int rlRight = mRlRight.getRight();  int rlLeft = mRlRight.getLeft();  //在哪里设的padding就要用哪个控件来获取padding值  int paddingStart = mLl.getPaddingStart();  Log.d("AddressActivity", "paddingStart:" + paddingStart);  //左侧textview需要移动的距离  int leftOffset = rlRight - leftRight - paddingStart;  //右侧textview需要移动的距离  int rightOffset = rlLeft + rightLeft - paddingStart;  //创建出镜像view  createCopyView();  //隐藏掉两边的tv  mTvLeft.setVisibility(View.INVISIBLE);  mTvRight.setVisibility(View.INVISIBLE);  //开启镜像view的动画  leftAnim(leftOffset,mLeftLocation[0]);  rightAnim(rightOffset,mRightLocation[0]); } /**  * 创建镜像view  */ private void createCopyView(){  mLeftLocation = new int[2];  mRightLocation = new int[2];  //获取相对window的坐标  mTvLeft.getLocationInWindow(mLeftLocation);  mTvRight.getLocationInWindow(mRightLocation);  //获取左边tv的缓存bitmap  mTvLeft.setDrawingCacheEnabled(true);  mLeftCacheBitmap = Bitmap.createBitmap(mTvLeft.getDrawingCache());  mTvLeft.destroyDrawingCache();  //获取右边tv的缓存bitmap  mTvRight.setDrawingCacheEnabled(true);  mRightCacheBitmap = Bitmap.createBitmap(mTvRight.getDrawingCache());  mTvRight.destroyDrawingCache();  //创建出两个镜像view  copyViewLeft = createCopyView(mLeftLocation[0], mLeftLocation[1], mLeftCacheBitmap);  copyViewRight = createCopyView(mRightLocation[0], mRightLocation[1], mRightCacheBitmap);  //释放bitmap资源...这我不确定是不是这么做  mLeftCacheBitmap = null;  mRightCacheBitmap = null; } /**  * 左侧镜像view的动画  * @param offset 偏移量  * @param defX  原始位置的x  */ private void leftAnim(int offset, final int defX){  ValueAnimator leftAnimV = ValueAnimator.ofInt(0,offset);  leftAnimV.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {   @Override   public void onAnimationUpdate(ValueAnimator valueAnimator) {    int animatedValue = (int) valueAnimator.getAnimatedValue();    WindowManager.LayoutParams layoutParams = (WindowManager.LayoutParams) copyViewLeft.getLayoutParams();    //往右边移动所以x是变大的    layoutParams.x = defX + animatedValue;    mWindowManager.updateViewLayout(copyViewLeft,layoutParams);   }  });  leftAnimV.setDuration(400);  leftAnimV.start();  //左侧动画监听  leftAnimV.addListener(new AnimatorListenerAdapter() {   @Override   public void onAnimationEnd(Animator animation) {    //改变值    String s = mTvLeft.getText().toString();    mTvLeft.setText(mTvRight.getText().toString());    mTvRight.setText(s);    mTvLeft.setVisibility(View.VISIBLE);    mWindowManager.removeView(copyViewLeft);    copyViewLeft = null;    mBtn.setEnabled(true);   }  }); } /**  * 右侧镜像view动画  * @param offset 偏移量  * @param defX  原始位置的x  */ private void rightAnim(int offset, final int defX){  ValueAnimator rightAnimV = ValueAnimator.ofInt(0,offset);  rightAnimV.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {   @Override   public void onAnimationUpdate(ValueAnimator valueAnimator) {    int animatedValue = (int) valueAnimator.getAnimatedValue();    WindowManager.LayoutParams layoutParams = (WindowManager.LayoutParams) copyViewRight.getLayoutParams();    layoutParams.x = defX - animatedValue;    mWindowManager.updateViewLayout(copyViewRight,layoutParams);   }  });  rightAnimV.setDuration(400);  rightAnimV.start();  rightAnimV.addListener(new AnimatorListenerAdapter() {   @Override   public void onAnimationEnd(Animator animation) {    mTvRight.setVisibility(View.VISIBLE);    mWindowManager.removeView(copyViewRight);    copyViewRight = null;   }  }); } /**  * 创建镜像view  *  * @param x  * @param y  * @param bitmap  */ private ImageView createCopyView(int x, int y, Bitmap bitmap) {  WindowManager.LayoutParams mLayoutParams = new WindowManager.LayoutParams();  mLayoutParams.format = PixelFormat.TRANSLUCENT;   //图片之外其他地方透明  mLayoutParams.gravity = Gravity.TOP | Gravity.LEFT;  mLayoutParams.x = x; //设置imageView的原点  mLayoutParams.y = y - getStatusHeight(this);  mLayoutParams.alpha = 1f;        //设置透明度  mLayoutParams.width = WindowManager.LayoutParams.WRAP_CONTENT;  mLayoutParams.height = WindowManager.LayoutParams.WRAP_CONTENT;  mLayoutParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE    | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;  ImageView copyView = new ImageView(this);  copyView = new ImageView(this);  copyView.setImageBitmap(bitmap);  mWindowManager.addView(copyView, mLayoutParams); //添加该iamgeView到window  return copyView; } /**  * 获取状态栏的高度  * @param context  * @return  */ private static int getStatusHeight(Context context) {  int statusHeight = 0;  Rect localRect = new Rect();  ((Activity) context).getWindow().getDecorView().getWindowVisibleDisplayFrame(localRect);  statusHeight = localRect.top;  if (0 == statusHeight) {   Class<?> localClass;   try {    localClass = Class.forName("com.android.internal.R$dimen");    Object localObject = localClass.newInstance();    int i5 = Integer.parseInt(localClass.getField("status_bar_height").get(localObject).toString());    statusHeight = context.getResources().getDimensionPixelSize(i5);   } catch (Exception e) {    e.printStackTrace();   }  }  return statusHeight; }}