之前接了需求要讓視頻播放時(shí)可以像優(yōu)酷視頻那樣在懸浮窗里播放，并且懸浮窗和主播放頁面之間要實(shí)現(xiàn)無縫切換，項(xiàng)目中使用的是自封裝的ijkplayer這個(gè)要求就代表不能在懸浮窗中新建視頻控件，所以需要在懸浮窗中復(fù)用主頁面的視頻控件，以達(dá)到無縫銜接的效果。

主頁面對(duì)應(yīng)的視頻控件的父view

<FrameLayout android: android:layout_width='match_parent' android:layout_height='match_parent' android:layout_centerInParent='true'/>

用FrameLayout作為添加視頻控件的ParentView，通過addview方法將新建的播放器控件添加到父控件內(nèi)部

vw_live = new IjkVideoView(this);

video_frame = findViewById(R.id.vw_live);video_frame.addView(vw_live);

主播放界面的啟動(dòng)模式

播放主界面的activity的啟動(dòng)模式不能為默認(rèn)，因?yàn)槲覀円ＷC播放主界面在顯示懸浮窗的時(shí)候退到后臺(tái)，但是整個(gè)的應(yīng)用不能退到后臺(tái)，所以activity的啟動(dòng)模式改為singleInstance

android:launchMode='singleInstance'

退到后臺(tái)我們通過moveTaskToBack(true)方法;

moveTaskToBack(true);

可以讓播放界面退到后臺(tái)而整個(gè)應(yīng)用不會(huì)退回后臺(tái)

權(quán)限請(qǐng)求

要使用懸浮窗需要申請(qǐng)權(quán)限

<uses-permission android:name='android.permission.SYSTEM_OVERLAY_WINDOW' />

if (!Settings.canDrawOverlays(this)) { Toast.makeText(this, '當(dāng)前無權(quán)限，請(qǐng)授權(quán)', Toast.LENGTH_SHORT); startActivityForResult(new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse('package:' + getPackageName())), 2); }

懸浮窗

@SuppressLint('ClickableViewAccessibility') public void showFloatingWindowView(IjkVideoView view) { // 懸浮窗顯示視圖 LayoutInflater layoutInflater = LayoutInflater.from(activity); mShowView = layoutInflater.inflate(R.layout.video_floating_window_layout, null);; // 獲取系統(tǒng)窗口管理服務(wù) mWindowManager = (WindowManager) activity.getSystemService(Context.WINDOW_SERVICE); // 懸浮窗口參數(shù)設(shè)置及返回 mFloatParams = getParams(); //floatingWindow內(nèi)部控件實(shí)例 init(view); // 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); } private void init(IjkVideoView viewGroup){ videoLayout = mShowView.findViewById(R.id.floating_video); videoLayout.removeAllViews(); if (viewGroup != null){ ijkVideoView = viewGroup; videoLayout.addView(ijkVideoView,new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT ,ViewGroup.LayoutParams.MATCH_PARENT)); } mBtnCloseFloatingWindow = mShowView.findViewById(R.id.close_floating_view); mBtnCloseFloatingWindow.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { } }); mBtnBackFloatingWindow = (ImageView)mShowView.findViewById(R.id.back_floating_view); mBtnBackFloatingWindow.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { } }); } 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)置懸浮窗口長寬數(shù)據(jù) layoutParams.width = 500; 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; }

懸浮窗的xml，可通過自定義獲得自己想要的效果

<FrameLayout xmlns:android='http://schemas.android.com/apk/res/android' android: android:layout_width='match_parent' android:layout_height='match_parent'> <FrameLayout android: android:layout_width='match_parent' android:layout_height='match_parent'/> <ImageView android: android:layout_width='50dp' android:layout_height='50dp' android:layout_gravity='end' android:padding='10dp' android:src='http://m.propowerdrill.cn/bcjs/@android:drawable/ic_menu_close_clear_cancel' /> <ImageView android: android:layout_width='50dp' android:layout_height='50dp' android:padding='10dp' android:src='http://m.propowerdrill.cn/bcjs/@android:drawable/ic_menu_revert' /></FrameLayout>

懸浮窗的滑動(dòng)，我們可以通過自定義點(diǎn)擊監(jiān)聽實(shí)現(xiàn)

/** * 浮窗移動(dòng)/點(diǎn)擊監(jiān)聽 */ private class FloatViewMoveListener implements View.OnTouchListener { //開始觸控的坐標(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; } }

懸浮窗的消失，在這里調(diào)用videoLayout.removeAllViews()是為了將復(fù)用的視頻控件的父View清空，返回主播放activity的時(shí)候調(diào)用addview方法不會(huì)再報(bào) child view has Parent,you have to call removeView()的錯(cuò)

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

啟動(dòng)懸浮窗

public videoFloatingWindow(Context context){ super(context); this.activity = context; }

對(duì)于懸浮窗的調(diào)用

用hasBind來記錄是否調(diào)用了懸浮窗

private void startFloatingWindow(){ if (!Settings.canDrawOverlays(this)) { Toast.makeText(this, '當(dāng)前無權(quán)限，請(qǐng)授權(quán)', Toast.LENGTH_SHORT); startActivityForResult(new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse('package:' + getPackageName())), 2); } else { video_frame.removeView(vw_live); videoFloatingWindow.getInstance(this).showFloatingWindowView(vw_live); hasBind = true; moveTaskToBack(true); } }

注意

一.由于主界面activity使用了singleInstance啟動(dòng)模式，所以從懸浮窗返回主界面activity時(shí)，要添加flag

Intent intent = new Intent(activity, activity.getClass());intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);activity.startActivity(intent);

二.當(dāng)主界面的activity退回后臺(tái)，再重新進(jìn)入主界面的時(shí)候，注意，不再調(diào)用onCreate方法，而是調(diào)用onNewIntent，所以重寫onNewIntent方法，重新進(jìn)入主界面，懸浮窗消失

@Override protected void onNewIntent(Intent intent) { super.onNewIntent(intent); Log.d('RemoteView', '重新顯示了'); //不顯示懸浮框 if (hasBind){ videoFloatingWindow.getInstance(this).dismiss(); video_frame.removeAllViews(); if (vw_live != null){video_frame.addView(vw_live); } hasBind = false; } }

總結(jié)

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