Android实现桌面悬浮小火箭效果实现桌面悬浮小火箭效果
本文实例为大家分享了Android实现悬浮小火箭效果的具体代码,供大家参考,具体内容如下
思路思路
使用serivce在后台启动小火箭
小火箭使用windowmanager实现。
用ontoch监听实现小火箭的拖拽。
代码实现代码实现
public class RocketService extends Service {
private WindowManager mWM;
private View view;
private int startX ;
private int startY ;
private LayoutParams params;
@Override
public IBinder onBind(Intent intent) {
return null ;
}
@Override
public void onCreate() {
super .onCreate();
System. out .println("服务创建。。。。" );
mWM = (WindowManager) getSystemService(WINDOW_SERVICE );
winWidth = mWM.getDefaultDisplay(). getWidth();
winHeight = mWM .getDefaultDisplay().getHeight ();
params = new WindowManager.LayoutParams();
params. height = WindowManager.LayoutParams.WRAP_CONTENT ;
params. width = WindowManager.LayoutParams.WRAP_CONTENT ;
params. flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE ;
params. format = PixelFormat. TRANSLUCENT ;
params. type = WindowManager.LayoutParams.TYPE_PHONE ;
params. gravity = Gravity. LEFT + Gravity. TOP;
view = LayoutInflater.from( this).inflate(R.layout. rocket , null );
//拿到 imageview,设置帧动画
ImageView ivRocket = (ImageView) view .findViewById(R.id. rocket);
ivRocket.setImageResource(R.drawable. rocket );
AnimationDrawable drawable = (AnimationDrawable) ivRocket.getDrawable();
drawable.start();
mWM.addView( view, params);
// 设置view的触摸事件,让它可以被拖拽
view.setOnTouchListener( new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent. ACTION_DOWN:
startX = ( int ) event.getRawX();
startY = ( int ) event.getRawY();
break ;
case MotionEvent. ACTION_MOVE:
int dx = (int ) (event.getRawX() - startX );
int dy = (int ) (event.getRawY() - startY );
// 更新浮窗位置
params. x += dx;
params. y += dy;
// 限制窗口坐标不超过屏幕
if (params .x < 0) {