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Android如何實(shí)現(xiàn)視頻懸浮窗口

發(fā)布時(shí)間:2020-08-04 09:26:25 來(lái)源:億速云 閱讀:402 作者:小豬 欄目:移動(dòng)開(kāi)發(fā)

這篇文章主要為大家展示了Android如何實(shí)現(xiàn)視頻懸浮窗口,內(nèi)容簡(jiǎn)而易懂,希望大家可以學(xué)習(xí)一下,學(xué)習(xí)完之后肯定會(huì)有收獲的,下面讓小編帶大家一起來(lái)看看吧。

前言

本文例子實(shí)現(xiàn)了點(diǎn)擊顯示懸浮窗口,同時(shí)窗口可播放視頻,拖動(dòng)位置,點(diǎn)擊關(guān)閉及返回 APP 頁(yè)面,通過(guò)例子來(lái)講述懸浮窗口實(shí)現(xiàn)原理及細(xì)節(jié)處理,效果圖如下所示:

Android如何實(shí)現(xiàn)視頻懸浮窗口

懸浮窗口.gif

原理

 WindowManager 對(duì) View 視圖進(jìn)行添加、移除、更新處理;

WindowManager.LayoutParams 對(duì)窗口參數(shù)進(jìn)行一系列設(shè)置。

實(shí)現(xiàn)

首先,需要添加相對(duì)應(yīng)懸浮窗權(quán)限:

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

Activity 頁(yè)面中,需要判斷懸浮窗權(quán)限是否獲取,如果未曾獲取,需要跳轉(zhuǎn)系統(tǒng)頁(yè),進(jìn)行對(duì)應(yīng)的授權(quán)操作:

public boolean requestOverlayPermission() {
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    if (!Settings.canDrawOverlays(this)) {
      Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName()));
      startActivityForResult(intent, REQUEST_OVERLAY_CODE);
      return true;
    } else {
      return false;
    }
  }
  return false;
}

獲取權(quán)限后,我們可以首先初始化我們要顯示的視圖,并且設(shè)置相對(duì)應(yīng)的事件,這里我們采用了 VideoView 進(jìn)行簡(jiǎn)單的視頻播放,并且設(shè)置懸浮窗關(guān)閉及返回前臺(tái)的操作:

private View initFloatView() {
  View view = View.inflate(this, R.layout.view_floating_window, null);
  // 設(shè)置視頻封面
  final ImageView mThumb = (ImageView) view.findViewById(R.id.thumb_floating_view);
  Glide.with(this).load(R.drawable.thumb).into(mThumb);
  // 懸浮窗關(guān)閉
  view.findViewById(R.id.close_floating_view).setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
      mFloatingWindow.dismiss();
    }
  });
  // 返回前臺(tái)頁(yè)面
  view.findViewById(R.id.back_floating_view).setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
      mFloatingWindow.setTopApp(FloatingWindowActivity.this);
    }
  });
  final VideoView videoView = view.findViewById(R.id.video_view);
  //視頻內(nèi)容設(shè)置
 videoView.setVideoPath("https://stream7.iqilu.com/10339/article/202002/18/2fca1c77730e54c7b500573c2437003f.mp4");
  // 視頻準(zhǔn)備完畢,隱藏正在加載封面,顯示視頻
  videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
    @Override
    public void onPrepared(MediaPlayer mp) {
      mThumb.setVisibility(View.GONE);
    }
  });
  // 循環(huán)播放
  videoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
    @Override
    public void onCompletion(MediaPlayer mp) {
      videoView.start();
    }
  });
  // 開(kāi)始播放視頻
  videoView.start();
  return view;
}

通過(guò)獲取窗口管理 WindowManager ,設(shè)置懸浮窗口參數(shù) WindowManager.LayoutParams 后,就可以通過(guò) WindowManageraddView 方法,生成對(duì)應(yīng)視圖的懸浮窗口:

public void showFloatingWindowView(Context context, View view) {
  // 懸浮窗顯示視圖
  mShowView = view;
  // 獲取系統(tǒng)窗口管理服務(wù)
  mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
  // 懸浮窗口參數(shù)設(shè)置及返回
  mFloatParams = getParams();
  // 設(shè)置窗口觸摸移動(dòng)事件
  mShowView.setOnTouchListener(new FloatViewMoveListener());
  // 懸浮窗生成
  mWindowManager.addView(mShowView, mFloatParams);
}

WindowManager.LayoutParams 參數(shù)設(shè)置,主要設(shè)置懸浮窗口類型為 WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY

private WindowManager.LayoutParams getParams() {
  WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
  //設(shè)置懸浮窗口類型
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    layoutParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
  } else {
    layoutParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
  }
  //設(shè)置懸浮窗口屬性
  layoutParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
      | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
      | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
      | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR
      | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH;
  //設(shè)置懸浮窗口透明
  layoutParams.format = PixelFormat.TRANSLUCENT;
  //設(shè)置懸浮窗口長(zhǎng)寬數(shù)據(jù)
  layoutParams.width = 600;
  layoutParams.height = 340;
  //設(shè)置懸浮窗顯示位置
  layoutParams.gravity = Gravity.START | Gravity.TOP;
  layoutParams.x = 100;
  layoutParams.y = 100;
  return layoutParams;
}

窗口觸摸移動(dòng)事件,主要通過(guò)獲取觸摸位置,通過(guò) WindowManagerupdateViewLayout 方法設(shè)置懸浮窗口的參數(shù),進(jìn)行窗口視圖位置更新:

private class FloatViewMoveListener implements View.OnTouchListener {

  //開(kāi)始觸控的坐標(biāo),移動(dòng)時(shí)的坐標(biāo)(相對(duì)于屏幕左上角的坐標(biāo))
  private int mTouchStartX;
  private int mTouchStartY;
  //開(kāi)始時(shí)的坐標(biāo)和結(jié)束時(shí)的坐標(biāo)(相對(duì)于自身控件的坐標(biāo))
  private int mStartX, mStartY;
  //判斷懸浮窗口是否移動(dòng),這里做個(gè)標(biāo)記,防止移動(dòng)后松手觸發(fā)了點(diǎn)擊事件
  private boolean isMove;

  @Override
  public boolean onTouch(View view, MotionEvent motionEvent) {
    int action = motionEvent.getAction();
    int x = (int) motionEvent.getX();
    int y = (int) motionEvent.getY();
    switch (action) {
      case MotionEvent.ACTION_DOWN:
        isMove = false;
        mTouchStartX = (int) motionEvent.getRawX();
        mTouchStartY = (int) motionEvent.getRawY();
        mStartX = x;
        mStartY = y;
        break;
      case MotionEvent.ACTION_MOVE:
        int mTouchCurrentX = (int) motionEvent.getRawX();
        int mTouchCurrentY = (int) motionEvent.getRawY();
        mFloatParams.x += mTouchCurrentX - mTouchStartX;
        mFloatParams.y += mTouchCurrentY - mTouchStartY;
        mWindowManager.updateViewLayout(mShowView, mFloatParams);
        mTouchStartX = mTouchCurrentX;
        mTouchStartY = mTouchCurrentY;
        float deltaX = x - mStartX;
        float deltaY = y - mStartY;
        if (Math.abs(deltaX) >= 5 || Math.abs(deltaY) >= 5) {
          isMove = true;
        }
        break;
      case MotionEvent.ACTION_UP:
        break;
      default:
        break;
    }
    //如果是移動(dòng)事件不觸發(fā)OnClick事件,防止移動(dòng)的時(shí)候一放手形成點(diǎn)擊事件
    return isMove;
  }
}

關(guān)閉懸浮窗,調(diào)用 WindowManagerremoveView 方法即可:

public void dismiss() {
  if (mWindowManager != null && mShowView != null) {
    mWindowManager.removeView(mShowView);
  }
}

懸浮窗點(diǎn)擊返回前臺(tái)方法:

public void setTopApp(Context context) {
  //獲取ActivityManager
  ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
  //獲得當(dāng)前運(yùn)行的task(任務(wù))
  List<ActivityManager.RunningTaskInfo> taskInfoList = null;
  if (activityManager != null) {
    taskInfoList = activityManager.getRunningTasks(100);
  }
  if (taskInfoList != null) {
    for (ActivityManager.RunningTaskInfo taskInfo : taskInfoList) {
      //找到本應(yīng)用的 task,并將它切換到前臺(tái)
      if (taskInfo.topActivity != null && taskInfo.topActivity.getPackageName().equals(context.getPackageName())) {
        activityManager.moveTaskToFront(taskInfo.id, 0);
        break;
      }
    }
  }
}

以上就是關(guān)于Android如何實(shí)現(xiàn)視頻懸浮窗口的內(nèi)容,如果你們有學(xué)習(xí)到知識(shí)或者技能,可以把它分享出去讓更多的人看到。

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