模仿qq视频通话的悬浮按钮的实例代码，如下所示；

public class FloatingWindowService extends Service{ private static final String TAG="OnTouchListener"; private static View mView = null; private static WindowManager mWindowManager = null; private static Context mContext = null; public static Boolean isShown = false; public WindowManager.LayoutParams params = null; private int pixel; private int TheOffset; @Override public void onCreate() { super.onCreate(); } @Override public int onStartCommand(Intent intent, int flags, int startId) { pixel = intent.getIntExtra("pixel",1); showPopupWindow(this); return super.onStartCommand(intent, flags, startId); } /** * 显示弹出框 * * @param context * */ private void showPopupWindow(final Context context) { if (isShown) { return; } isShown = true; // 获取应用的Context mContext = context.getApplicationContext(); // 获取WindowManager mWindowManager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); params = new WindowManager.LayoutParams(); mView = setUpView(context); // 类型 params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT; int flags=WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE; params.flags = flags; params.format = PixelFormat.TRANSLUCENT; params.width = WindowManager.LayoutParams.WRAP_CONTENT; params.height = WindowManager.LayoutParams.WRAP_CONTENT; params.gravity = Gravity.CENTER; mWindowManager.addView(mView, params); } /** * 隐藏弹出框 */ private static void hidePopupWindow() { if (isShown && null != mView) { mWindowManager.removeView(mView); isShown = false; } } private int x=0; private int y=0; private int startX=0; private int startY=0; private View setUpView(final Context context) { View view = LayoutInflater.from(context).inflate(R.layout.popupwindow, null); TextView tv= (TextView) view.findViewById(R.id.title); int w = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED); int h = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED); tv.measure(w, h); TheOffset=(pixel-tv.getMeasuredWidth())/2-50; tv.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent =new Intent(context,MainActivity.class); context.startActivity(intent); // Toast.makeText(context,"点击事件",Toast.LENGTH_LONG).show(); } }); tv.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()){ case MotionEvent.ACTION_MOVE: int newX= (int) (event.getRawX()-x); int newY= (int) (event.getRawY()-y); params.x=newX+startX; params.y=newY+startY; mWindowManager.updateViewLayout(mView,params); break; case MotionEvent.ACTION_DOWN: x= (int) event.getRawX(); y= (int) event.getRawY(); break; case MotionEvent.ACTION_UP: if(params.x>=0){ params.x=TheOffset; mWindowManager.updateViewLayout(mView,params); } if(params.x<=-0){ params.x=-TheOffset; mWindowManager.updateViewLayout(mView,params); } Log.i(TAG,params.x+""); Log.i(TAG,params.y+""); //判断 从按住到抬起时候的移动距离， 如果如果移动距离大于20 那么就拦截事件，否则就不拦截事件，主要是处理点击事件的冲突 if(Math.abs(startX-params.x)>20 ||Math.abs(startY-params.y)>20 ){ //记录上一次的偏移量 startX=params.x; startY=params.y; return true; }else { startX=params.x; startY=params.y; return false; } } return false; } }); return view; } @Nullable @Override public IBinder onBind(Intent intent) { return null; } @Override public void onDestroy() { super.onDestroy(); if (mView != null) { isShown=false; mWindowManager.removeView(mView); } } }

Main

@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); findViewById(R.id.open).setOnClickListener(this); findViewById(R.id.close).setOnClickListener(this); }

-点击开启 关闭悬浮按钮

@Override public void onClick(View v) { switch (v.getId()){ case R.id.open: //判断是否拥有悬浮权限 //op 的值是 0 ~ 47，其中0代表粗略定位权限，1代表精确定位权限，24代表悬浮窗权限。（具体可以看看Android源码在android.app下就有个AppOpsManager类） if(utils.checkOp(this,24)==0) { Intent intent=new Intent(MainActivity.this, FloatingWindowService.class); intent.putExtra("pixel",utils.pixel(this)[0]); startService(intent); }else { //引导用户进入悬浮权限设置界面 Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName())); startActivityForResult(intent, 200); } break; case R.id.close: stopService(new Intent(MainActivity.this,FloatingWindowService.class)); break; } }

判断权限 -获取屏幕的宽高

public class utils { public static int checkOp(Context context, int op){ final int version = Build.VERSION.SDK_INT; if (version >= 19){ Object object = context.getSystemService("appops"); Class c = object.getClass(); try { Class[] cArg = new Class[3]; cArg[0] = int.class; cArg[1] = int.class; cArg[2] = String.class; Method lMethod = c.getDeclaredMethod("checkOp", cArg); return (Integer) lMethod.invoke(object, op, Binder.getCallingUid(), context.getPackageName()); } catch(NoSuchMethodException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } } return -1; } /** * 获取屏幕的宽高 * @param context * @return */ public static int[] pixel(Activity context){ DisplayMetrics dm = new DisplayMetrics(); context.getWindowManager().getDefaultDisplay().getMetrics(dm); return new int[]{dm.widthPixels,dm.heightPixels}; } }

--popupwindow填充布局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <LinearLayout android:id="@+id/popup_window" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@android:color/white" android:orientation="vertical" > <TextView android:background="@mipmap/ic_launcher" android:id="@+id/title" android:layout_width="50dp" android:layout_height="50dp"/> </LinearLayout> </LinearLayout>

以上所述是小编给大家介绍的Android开发模仿qq视频通话悬浮按钮(实例代码)，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！