本文实例为大家分享了Android实现悬浮图片的具体代码，供大家参考，具体内容如下

@SuppressLint("AppCompatCustomView")public class MoveImageView extends ImageView { //按下那一刻的坐标和 控件上下左右距离 private float lastX; private float lastY; private int left; private int top; private int right; private int bottom; //如果是拖动事件就不用响应点击事件 boolean isMove = false; boolean isAnimatoring = false; //屏幕宽高 private int screenWidthPx; private int screenHeightPx; public MoveImageView(Context context) { this(context, null); } public MoveImageView(Context context, @Nullable AttributeSet attrs) { this(context, attrs, 0); } public MoveImageView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); screenWidthPx = getScreenWidthPx(getContext()); screenHeightPx = getScreenHeightPx(getContext()); } @Override public boolean onTouchEvent(MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: //动画执行过程中，不响应一切操作， // 这里相当于不让其走后面的MotionEvent.ACTION_MOVE:与MotionEvent.ACTION_UP: if (isAnimatoring) { return false; } lastX = event.getRawX(); lastY = event.getRawY(); left = getLeft(); top = getTop(); right = getRight(); bottom = getBottom(); break; case MotionEvent.ACTION_MOVE: isMove = true; float x = event.getRawX(); float y = event.getRawY(); int l = (int) (left + (x - lastX)); int t = (int) (top + (y - lastY)); int r = (int) (right + (x - lastX)); int b = (int) (bottom + (y - lastY)); layout(l, t, r, b); break; case MotionEvent.ACTION_UP: if (isMove) { //如果顶部拖出屏幕外面，回正 if (getTop() < 0) { layout(getLeft(), 0, getRight(), getHeight()); } //getBottom() 获取到的是 控件底部到父容器顶部的距离，所以需要减去状态栏的高度 int bottomHeight = screenHeightPx - getStatusBarHeight(getContext()); //如果底部拖出屏幕外面，回正 if (getBottom() > bottomHeight) { layout(getLeft(), bottomHeight-getHeight(), getRight(), bottomHeight); } isMove = false; startAnimation(); return true; } return super.onTouchEvent(event); } return super.onTouchEvent(event); } private void startAnimation() { isAnimatoring = true; //右边距 int marinRight = DisplayUtils.dpToPx(20); int endValue = screenWidthPx - marinRight; ValueAnimator animator = ValueAnimator.ofInt(getRight(), endValue); animator.setDuration(Math.abs(endValue - getRight()) > 1000 ? 1000 : Math.abs(endValue - getRight())); animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animation) { int curValue = (int) animation.getAnimatedValue(); layout(curValue - getWidth(), getTop(), curValue, getHeight() + getTop()); } }); animator.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationStart(Animator animation) { } @Override public void onAnimationEnd(Animator animation) { isAnimatoring = false; animator.removeAllUpdateListeners(); animator.removeAllListeners(); } }); animator.start(); } /** * 获取状态栏高度 */ public static int getStatusBarHeight(Context context) { int result = 24; int resId = context.getResources().getIdentifier("status_bar_height", "dimen", "android"); if (resId > 0) { result = context.getResources().getDimensionPixelSize(resId); } else { result = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, result, Resources.getSystem().getDisplayMetrics()); } return result; } public static int getScreenWidthPx(Context context) { WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics dm = new DisplayMetrics(); if (windowManager != null) {// windowManager.getDefaultDisplay().getMetrics(dm); windowManager.getDefaultDisplay().getRealMetrics(dm); return dm.widthPixels; } return 0; } public static int getScreenHeightPx(Context context) { WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics dm = new DisplayMetrics(); if (windowManager != null) {// windowManager.getDefaultDisplay().getMetrics(dm); windowManager.getDefaultDisplay().getRealMetrics(dm); return dm.heightPixels; } return 0; }}

应用：

布局文件:

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".TestActivity"> <com.lingtao.ltvideo.widgets.MoveImageView android:layout_width="50dp" android:id="@+id/MoveImageView" android:layout_height="50dp" android:layout_alignParentRight="true" android:layout_alignParentBottom="true" android:layout_marginBottom="100dp" android:layout_marginRight="20dp" android:src="#ff0000" /></RelativeLayout>

Activity:

public class TestActivity extends AppCompatActivity { private MoveImageView moveImageView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_test2); moveImageView = ((MoveImageView) findViewById(R.id.MoveImageView)); moveImageView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(TestActivity.this, "点击事件", Toast.LENGTH_SHORT).show(); } }); }}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。