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
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脚本之家网站的支持！