Android 模仿苹果虚拟悬浮按钮(自动靠边、可浮现任何界面上)
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Android 模仿苹果虚拟悬浮按钮(自动靠边、可浮现任何界面上)
小編覺得挺不錯的,現在分享給大家,幫大家做個參考.
由于最近小蔡的手機音量鍵壞了,調節音量有點麻煩,突發奇想,想自己實現一個快捷鍵來調節音量。在忘上參考了一些代碼,總結出一般本章,分享給大家。
首先 按鈕要想實現懸浮在任何界面,那么必須是要寫在服務里面的,使用定時器,2.5s不觸摸后,背景變淡
下載地址
清單文件中加權限
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
public class FloatViewService extends Service {
private static final String TAG = "FloatViewService";
// 定義浮動窗口布局
private LinearLayout mFloatLayout;
private WindowManager.LayoutParams wmParams;
// 創建浮動窗口設置布局參數的對象
private WindowManager mWindowManager;
private ImageButton mFloatView;
private int screenHeight;
private int screenWidth;
private MyCountDownTimer myCountDownTimer;
@Override
public void onCreate() {
super.onCreate();
Log.i(TAG, "onCreate");
screenHeight = ScreenParam.getInstance().height;//自己寫的工具類用來獲取屏幕寬高。
screenWidth = ScreenParam.getInstance().width;
createFloatView();
myCountDownTimer = new MyCountDownTimer(2500, 1000); //設置計時2.5s
myCountDownTimer.start();
}
@SuppressWarnings("static-access")
@SuppressLint("InflateParams")
private void createFloatView() {
wmParams = new WindowManager.LayoutParams();
// 通過getApplication獲取的是WindowManagerImpl.CompatModeWrapper
mWindowManager = (WindowManager) getApplication().getSystemService(
getApplication().WINDOW_SERVICE);
// 設置window type
wmParams.type = LayoutParams.TYPE_PHONE;
// 設置圖片格式,效果為背景透明
wmParams.format = PixelFormat.RGBA_8888;
// 設置浮動窗口不可聚焦(實現操作除浮動窗口外的其他可見窗口的操作)
wmParams.flags = LayoutParams.FLAG_NOT_FOCUSABLE;
// 調整懸浮窗顯示的停靠位置為右側底部
wmParams.gravity = Gravity.RIGHT | Gravity.BOTTOM;
// 以屏幕左上角為原點,設置x、y初始值,相對于gravity
wmParams.x = 0;
wmParams.y = 150;
// 設置懸浮窗口長寬數據
wmParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
wmParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
LayoutInflater inflater = LayoutInflater.from(getApplication());
// 獲取浮動窗口視圖所在布局
mFloatLayout = (LinearLayout) inflater.inflate(
R.layout.alert_window_menu, null);
// 添加mFloatLayout
mWindowManager.addView(mFloatLayout, wmParams);
// 浮動窗口按鈕
mFloatView = (ImageButton) mFloatLayout
.findViewById(R.id.alert_window_imagebtn);
mFloatLayout.measure(View.MeasureSpec.makeMeasureSpec(0,
View.MeasureSpec.UNSPECIFIED), View.MeasureSpec
.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
// 設置監聽浮動窗口的觸摸移動
mFloatView.setOnTouchListener(new OnTouchListener() {
boolean isClick;
private int leftDistance;
private float rawX;
private float rawY;
@SuppressLint("ClickableViewAccessibility")
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mFloatLayout.setAlpha(1.0f);
myCountDownTimer.cancel();取消計時
rawX = event.getRawX();
rawY = event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
// getRawX是觸摸位置相對于屏幕的坐標,getX是相對于按鈕的坐標
int distanceX = (int) (event.getRawX()-rawX);
int distanceY = (int) (event.getRawY()-rawY);
leftDistance = (int) event.getRawX()
+ mFloatView.getMeasuredWidth() / 2;
wmParams.x = wmParams.x-distanceX;
wmParams.y = wmParams.y-distanceY;
// 刷新
mWindowManager.updateViewLayout(mFloatLayout, wmParams);
rawX = event.getRawX();
rawY = event.getRawY();
break;
case MotionEvent.ACTION_UP:
myCountDownTimer.start();重新開始計時
if(wmParams.x>leftDistance){
wmParams.x = screenWidth-mFloatView.getMeasuredWidth() / 2;
}else{
wmParams.x = 0;
}
mWindowManager.updateViewLayout(mFloatLayout, wmParams);
break;
}
return false;
}
});
mFloatView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
AudioManager audioManager = (AudioManager) getSystemService(Service.AUDIO_SERVICE);
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,
audioManager.getStreamVolume(AudioManager.STREAM_MUSIC), AudioManager.FLAG_SHOW_UI);
// Toast.makeText(FloatViewService.this, "hello!",
// Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onDestroy() {
super.onDestroy();
if (mFloatLayout != null) {
// 移除懸浮窗口
mWindowManager.removeView(mFloatLayout);
}
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
public class MyCountDownTimer extends CountDownTimer {
public MyCountDownTimer(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
@Override
public void onTick(long millisUntilFinished) {
}
@Override
public void onFinish() {
mFloatLayout.setAlpha(0.4f);
}
}
}
然后再Activity里啟動服務就好了
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ScreenParam.getInstance().init(this);
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
Intent intent = new Intent(MainActivity.this, FloatViewService.class);
//啟動FloatViewService
startService(intent);
super.onStart();
}
如果不想顯示Activity界面的話,可以在配置這個屬性就ok了
android:theme="@android:style/Theme.NoDisplay"
就是這么簡單!
總結
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