直播短视频系统,Android实现系统级全局的PopupWindow
直播短视频系统,Android实现系统级全局的PopupWindow
1. 清单文件声明权限
<!-- 显示顶层浮窗 -->
```handlebars **<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>** ```
2. 全局的PopupWindow的布局文件(total_popup_window.xml ) :
```handlebars <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_gravity="center" android:background="#ededed" android:gravity="center" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <RelativeLayout android:id="@+id/popup_window" android:layout_width="300dp" android:layout_height="200dp" android:background="#ffffff" android:orientation="vertical" > <TextView android:id="@+id/title" android:layout_width="match_parent" android:layout_height="44dp" android:gravity="center" android:text="标题" android:textColor="#000000" android:textSize="18sp" /> <View android:id="@+id/title_divider" android:layout_width="match_parent" android:layout_height="2dp" android:layout_below="@id/title" android:background="#ededed" /> <TextView android:id="@+id/content" android:layout_centerVertical="true" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="10dp" android:layout_below="@id/title_divider" android:gravity="center" android:padding="12dp" android:text="这里展示的是内容" android:textColor="#000000" android:textSize="16sp" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:orientation="horizontal" android:paddingBottom="10dp" android:paddingLeft="10dp" android:paddingRight="10dp" > <Button android:id="@+id/negativeBtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:background="#ededed" android:focusable="true" android:padding="10dp" android:text="取消" android:textColor="#000000" android:textSize="16sp" /> <Button android:id="@+id/positiveBtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="18dp" android:layout_weight="1" android:background="#ed32" android:focusable="true" android:padding="10dp" android:text="确定" android:textColor="#000000" android:textSize="16sp" /> </LinearLayout> </RelativeLayout> </LinearLayout> ```
3. WindowUtils
```handlebars package com.example.hellowindow; import android.content.Context; import android.graphics.PixelFormat; import android.graphics.Rect; import android.view.Gravity; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.View.OnKeyListener; import android.view.View.OnTouchListener; import android.view.WindowManager; import android.view.View.OnClickListener; import android.view.WindowManager.LayoutParams; import android.widget.Button; /** * 弹窗辅助类 * @ClassName WindowUtils */ public class WindowUtils { private static final String LOG_TAG = "WindowUtils"; private static View mView = null; private static WindowManager mWindowManager = null; private static Context mContext = null; public static Boolean isShown = false; /** * 显示弹出框 * * @param context * @param view */ public static void showPopupWindow(final Context context) { if (isShown) { LogUtil.i(LOG_TAG, "return cause already shown"); return; } isShown = true; LogUtil.i(LOG_TAG, "showPopupWindow"); // 获取应用的Context mContext = context.getApplicationContext(); // 获取WindowManager mWindowManager = (WindowManager) mContext .getSystemService(Context.WINDOW_SERVICE); mView = setUpView(context); final WindowManager.LayoutParams params = new WindowManager.LayoutParams(); // 类型 //params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;//不兼容8.0 params.type = Build.VERSION.SDK_INT < Build.VERSION_CODES.O ? WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY : WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;//兼容了8.0 // WindowManager.LayoutParams.TYPE_SYSTEM_ALERT // 设置flag int flags = WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM; // | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE; // 如果设置了WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,弹出的View收不到Back键的事件 params.flags = flags; // 不设置这个弹出框的透明遮罩显示为黑色 params.format = PixelFormat.TRANSLUCENT; // FLAG_NOT_TOUCH_MODAL不阻塞事件传递到后面的窗口 // 设置 FLAG_NOT_FOCUSABLE 悬浮窗口较小时,后面的应用图标由不可长按变为可长按 // 不设置这个flag的话,home页的划屏会有问题 params.width = LayoutParams.MATCH_PARENT; params.height = LayoutParams.MATCH_PARENT; params.gravity = Gravity.CENTER; mWindowManager.addView(mView, params); LogUtil.i(LOG_TAG, "add view"); } /** * 隐藏弹出框 */ public static void hidePopupWindow() { LogUtil.i(LOG_TAG, "hide " + isShown + ", " + mView); if (isShown && null != mView) { LogUtil.i(LOG_TAG, "hidePopupWindow"); mWindowManager.removeView(mView); isShown = false; } } private static View setUpView(final Context context) { LogUtil.i(LOG_TAG, "setUp view"); View view = LayoutInflater.from(context).inflate(R.layout.popupwindow, null); Button positiveBtn = (Button) view.findViewById(R.id.positiveBtn); positiveBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { LogUtil.i(LOG_TAG, "ok on click"); // 打开安装包 // 隐藏弹窗 WindowUtils.hidePopupWindow(); } }); Button negativeBtn = (Button) view.findViewById(R.id.negativeBtn); negativeBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { LogUtil.i(LOG_TAG, "cancel on click"); WindowUtils.hidePopupWindow(); } }); // 点击窗口外部区域可消除 // 这点的实现主要将悬浮窗设置为全屏大小,外层有个透明背景,中间一部分视为内容区域 // 所以点击内容区域外部视为点击悬浮窗外部 final View popupWindowView = view.findViewById(R.id.popup_window);// 非透明的内容区域 view.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { LogUtil.i(LOG_TAG, "onTouch"); int x = (int) event.getX(); int y = (int) event.getY(); Rect rect = new Rect(); popupWindowView.getGlobalVisibleRect(rect); if (!rect.contains(x, y)) { WindowUtils.hidePopupWindow(); } LogUtil.i(LOG_TAG, "onTouch : " + x + ", " + y + ", rect: " + rect); return false; } }); // 点击back键可消除 view.setOnKeyListener(new OnKeyListener() { @Override public boolean onKey(View v, int keyCode, KeyEvent event) { switch (keyCode) { case KeyEvent.KEYCODE_BACK: WindowUtils.hidePopupWindow(); return true; default: return false; } } }); return view; } } ```
4. 调用
打开:需要动态申请权限
```handlebars if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { if (Settings.canDrawOverlays(PopupTestActivity.this)) { WindowUtils.showPopupWindow(this); } else { //若没有权限,提示获取. Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION); Toast.makeText(PopupTestActivity.this,"需要取得权限以使用悬浮窗",Toast.LENGTH_SHORT).show(); startActivity(intent); } }else { //SDK在23以下,不用管. WindowUtils.showPopupWindow(this); } ```
关闭
```handlebars
WindowUtils.hidePopupWindow();
```
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