Android悬浮窗开启 适配所有机型（附源码）
1.开启悬浮窗权限
清单文件中添加：
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
2.检测是否开启了悬浮窗权限：
public static boolean canDrawOverlays(Context context) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) return true;
else if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
return Settings.canDrawOverlays(context);
} else {
if (Settings.canDrawOverlays(context)) return true;
try {
WindowManager mgr = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
if (mgr == null) return false; //getSystemService might return null
View viewToAdd = new View(context);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(0, 0, android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O ?
WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY : WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSPARENT);
viewToAdd.setLayoutParams(params);
mgr.addView(viewToAdd, params);
mgr.removeView(viewToAdd);
return true;
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
}
3.Activity调用
if (canDrawOverlays(getApplicationContext())) {
myWindowManager = MyWindowManager.getInstance();
myWindowManager.createNormalView(getApplicationContext(), this);
} else {
requestSettingCanDrawOverlays();
}
4.开启悬浮框
private void requestSettingCanDrawOverlays() {
int sdkInt = Build.VERSION.SDK_INT;
if (sdkInt >= Build.VERSION_CODES.O) {//8.0以上
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
startActivityForResult(intent, OPEN_OVERLAY_PERMISSION);
} else if (sdkInt >= Build.VERSION_CODES.M) {//6.0-8.0
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
intent.setData(Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, OPEN_OVERLAY_PERMISSION);
} else {//4.4-6.0以下
//无需处理了
}
}
5.Activity开启悬浮框回调
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
//浮窗权限申请
if (requestCode == OPEN_OVERLAY_PERMISSION) {
new CountDownTimer(1000, 100) {
@Override
public void onTick(long millisUntilFinished) {
}
@Override
public void onFinish() {
if (DeviceTools.canDrawOverlays(getApplicationContext())) {
myWindowManager = MyWindowManager.getInstance();
myWindowManager.createNormalView(getApplicationContext(), MainActivity.this);
} else {
Toast.makeText(MainActivity.this, "您拒绝了此权限，将无法显示悬浮窗", Toast.LENGTH_SHORT).show();
}
}
}.start();
}
}
6.MyWindowManager代码
/**
* 悬浮窗管理器
* 创建，移除
* 单例模式
*/
public class MyWindowManager {
private FloatNormalView normalView;
private static MyWindowManager instance;
private WindowManager windowManager;
private MyWindowManager() {
}
public static MyWindowManager getInstance() {
if (instance == null)
instance = new MyWindowManager();
return instance;
}
private WindowManager getWindowManager(Context context) {
if (windowManager == null)
windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
return windowManager;
}
public void setContent(String talkResult){
if (normalView != null) {
normalView.setResultContent(talkResult);
}
}
/**
* 创建小型悬浮窗
*/
public Activity activity = null;
public void createNormalView(Context context, Activity activity) {
if (normalView == null) {
normalView = new FloatNormalView(context,activity);
}
this.getWindowManager(context);
this.activity = activity;
}
/**
* 移除悬浮窗
*
* @param context
*/
public void removeNormalView(Context context) {
if (normalView != null) {
windowManager.removeView(normalView);
normalView = null;
}
}
}
7.FloatNormalView代码
/**
* 悬浮窗
*/
public class FloatNormalView extends LinearLayout {
/**
* 记录小悬浮窗的宽度
*/
public static int viewWidth;
/**
* 记录小悬浮窗的高度
*/
public static int viewHeight;
/**
* 记录系统状态栏的高度
*/
private static int statusBarHeight;
/**
* 用于更新小悬浮窗的位置
*/
private WindowManager windowManager;
/**
* 小悬浮窗的参数
*/
private WindowManager.LayoutParams mParams;
/**
* 记录当前手指位置在屏幕上的横坐标值
*/
private float xInScreen;
/**
* 记录当前手指位置在屏幕上的纵坐标值
*/
private float yInScreen;
/**
* 记录手指按下时在屏幕上的横坐标的值
*/
private float xDownInScreen;
/**
* 记录手指按下时在屏幕上的纵坐标的值
*/
private float yDownInScreen;
/**
* 记录手指按下时在小悬浮窗的View上的横坐标的值
*/
private float xInView;
/**
* 记录手指按下时在小悬浮窗的View上的纵坐标的值
*/
private float yInView;
private Context mContext = null;
private ActivityManager activityManager = null;
private Activity mActivity = null;
private TextView tvResult = null;
public FloatNormalView(Context context, Activity activity) {
super(context);
mContext = context;
mActivity = activity;
windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); ;
LayoutInflater.from(context).inflate(R.layout.float_normal_view, this);
View view = findViewById(R.id.ll_float_normal);
viewWidth = view.getLayoutParams().width;
viewHeight = view.getLayoutParams().height;
tvResult = view.findViewById(R.id.tv_result);
initLayoutParams();
}
/**
* 初始化参数
*/
private void initLayoutParams() {
//屏幕宽高
int screenWidth = windowManager.getDefaultDisplay().getWidth();
int screenHeight = windowManager.getDefaultDisplay().getHeight();
mParams = new WindowManager.LayoutParams();
//总是出现在应用程序窗口之上。
mParams.type = WindowManager.LayoutParams.TYPE_PHONE;
// FLAG_NOT_TOUCH_MODAL不阻塞事件传递到后面的窗口
// 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
mParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;
//悬浮窗默认显示的位置
mParams.gravity = Gravity.RIGHT | Gravity.TOP;
//指定位置
mParams.x = screenWidth - viewWidth * 2;
mParams.y = screenHeight / 2 + viewHeight * 2;
//悬浮窗的宽高
mParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
mParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
mParams.format = PixelFormat.TRANSPARENT;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
mParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
} else {
mParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;// 系统提示window
}
windowManager.addView(this, mParams);
}
public void setResultContent(String talkResult){
tvResult.setText(talkResult);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// 手指按下时记录必要数据,纵坐标的值都需要减去状态栏高度
xInView = event.getX();
yInView = event.getY();
xDownInScreen = event.getRawX();
yDownInScreen = event.getRawY() - getStatusBarHeight();
xInScreen = event.getRawX();
yInScreen = event.getRawY() - getStatusBarHeight();
break;
case MotionEvent.ACTION_MOVE:
xInScreen = event.getRawX();
yInScreen = event.getRawY() - getStatusBarHeight();
// 手指移动的时候更新小悬浮窗的位置
updateViewPosition();
break;
case MotionEvent.ACTION_UP:
// 如果手指离开屏幕时，xDownInScreen和xInScreen相等，且yDownInScreen和yInScreen相等，则视为触发了单击事件。
if (xDownInScreen == xInScreen && yDownInScreen == yInScreen) {
if (!DeviceTools.isRunForeground()){
Log.e("app---","后台");
// activityManager.moveTaskToFront(mActivity.getTaskId(), ActivityManager.MOVE_TASK_WITH_HOME);
EventBus.getDefault().post(new DVRConnectBean(Type.DeviceCodeStatus.UNKNOWN, EventBusTag.INSTALL_APP));
}
}
break;
default:
break;
}
return true;
}
public boolean IsForeground(Context context) {
ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
if (tasks != null && !tasks.isEmpty()) {
ComponentName topActivity = tasks.get(0).topActivity;
if (topActivity.getPackageName().equals(context.getPackageName())) {
return true;
}
}
return false;
}
/**
* 将小悬浮窗的参数传入，用于更新小悬浮窗的位置。
*
* @param params 小悬浮窗的参数
*/
public void setParams(WindowManager.LayoutParams params) {
mParams = params;
}
/**
* 更新小悬浮窗在屏幕中的位置。
*/
private void updateViewPosition() {
// mParams.x = (int) (xInScreen - xInView);
mParams.y = (int) (yInScreen - yInView);
windowManager.updateViewLayout(this, mParams);
}
/**
* 用于获取状态栏的高度。
*
* @return 返回状态栏高度的像素值。
*/
private int getStatusBarHeight() {
if (statusBarHeight == 0) {
try {
Class<?> c = Class.forName("com.android.internal.R$dimen");
Object o = c.newInstance();
Field field = c.getField("status_bar_height");
int x = (Integer) field.get(o);
statusBarHeight = getResources().getDimensionPixelSize(x);
} catch (Exception e) {
e.printStackTrace();
}
}
return statusBarHeight;
}
}
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