原因
<!-- 在应用程序的AndroidManifest.xml文件中添加权限 -->
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
在某些机型上居然后出现permission denied for window type 2038错误：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.lanmao.jpsg.android, PID: 27024
android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W @ff8b1a
-- permission denied for window type 2038
at android.view.ViewRootImpl.setView(ViewRootImpl.java:1090)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:381)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:93)
at com.quicksdk.apiadapter.undefined.a.y.b(ToolBar.java:58)
at com.quicksdk.apiadapter.undefined.UserAdapter$6.onClick(UserAdapter.java:138)
at com.quicksdk.apiadapter.undefined.a.r$a$1.onClick(LoginDialog.java:88)
at android.view.View.performClick(View.java:7339)
at android.widget.TextView.performClick(TextView.java:14226)
at android.view.View.performClickInternal(View.java:7305)
at android.view.View.access$3200(View.java:846)
at android.view.View$PerformClick.run(View.java:27787)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7081)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965) ```
Build.VERSION.SDK_INT
Build.VERSION.SDK_INT 软件app安装在哪个手机上，该手机的操作系统版本号 比如8.1对应的SDK_INT是27
The SDK version of the software currently running on this hardware device.
This value never changes while a device is booted, but it may increase when
the hardware manufacturer provides an OTA update.
Android API与Android版本对应关系
SDK_INT
解决方案
主要代码
private static final int FloatRequestCode = 1002;
public void onCreate() {
super.onCreate();
Activity context = getContext();
com.quicksdk.Sdk.getInstance().onCreate(context);
if(!checkFloatPermission(context)){
requestFloatPermission(context, FloatRequestCode);
}
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
final Activity context = getContext();
com.quicksdk.Sdk.getInstance().onActivityResult(context,
requestCode, resultCode, data);
if(requestCode == FloatRequestCode) {
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
if(!checkFloatPermission(context)){
requestFloatPermission(context,FloatRequestCode);
}
}
},1000);
}
}
/***
* 检查悬浮窗开启权限
* @param context
* @return
*/
public boolean checkFloatPermission(Context context) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT)
return true;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
try {
Class cls = Class.forName("android.content.Context");
Field declaredField = cls.getDeclaredField("APP_OPS_SERVICE");
declaredField.setAccessible(true);
Object obj = declaredField.get(cls);
if (!(obj instanceof String)) {
return false;
}
String str2 = (String) obj;
obj = cls.getMethod("getSystemService", String.class).invoke(context, str2);
cls = Class.forName("android.app.AppOpsManager");
Field declaredField2 = cls.getDeclaredField("MODE_ALLOWED");
declaredField2.setAccessible(true);
Method checkOp = cls.getMethod("checkOp", Integer.TYPE, Integer.TYPE, String.class);
int result = (Integer) checkOp.invoke(obj, 24, Binder.getCallingUid(), context.getPackageName());
return result == declaredField2.getInt(cls);
} catch (Exception e) {
return false;
}
} else {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
AppOpsManager appOpsMgr = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
if (appOpsMgr == null)
return false;
int mode = appOpsMgr.checkOpNoThrow("android:system_alert_window", android.os.Process.myUid(), context
.getPackageName());
return Settings.canDrawOverlays(context) || mode == AppOpsManager.MODE_ALLOWED || mode == AppOpsManager.MODE_IGNORED;
} else {
return Settings.canDrawOverlays(context);
}
}
}
/**
* 悬浮窗开启权限
* @param context
* @param requestCode
*/
public void requestFloatPermission(Activity context, int requestCode){
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
intent.setData(Uri.parse("package:" + context.getPackageName()));
context.startActivityForResult(intent, requestCode);
}
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