Ví dụ, tôi thích bài đăng này hơn nhưng tôi gặp lỗi khi thêm viewgroup vào đối tượng windowmanager, tôi đã sử dụng cùng một lớp cho Dịch vụ như đã đăng trong câu hỏi mà không có thay đổi nào, tôi có thể nhầm lẫn là tôi đã không hiểu nó
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.addView(mView, params); // here
khi tôi thêm chế độ xem vào WindowManger
đây là tệp kê khai của tôi
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.searce.testoverlay"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name="TestOverlayActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:enabled="true" android:name=".HUD"></service>
</application>
</manifest>
lỗi
09-27 18:49:23.561: ERROR/AndroidRuntime(653): Uncaught handler: thread main exiting due to uncaught exception
09-27 18:49:23.571: ERROR/AndroidRuntime(653): java.lang.RuntimeException: Unable to create service com.searce.testoverlay.HUD: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRoot$W@44da9bc0 -- permission denied for this window type
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at android.app.ActivityThread.handleCreateService(ActivityThread.java:2790)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at android.app.ActivityThread.access$3200(ActivityThread.java:119)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1917)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at android.os.Handler.dispatchMessage(Handler.java:99)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at android.os.Looper.loop(Looper.java:123)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at android.app.ActivityThread.main(ActivityThread.java:4363)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at java.lang.reflect.Method.invokeNative(Native Method)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at java.lang.reflect.Method.invoke(Method.java:521)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at dalvik.system.NativeStart.main(Native Method)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): Caused by: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRoot$W@44da9bc0 -- permission denied for this window type
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at android.view.ViewRoot.setView(ViewRoot.java:492)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at com.searce.testoverlay.HUD.onCreate(HUD.java:41)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): at android.app.ActivityThread.handleCreateService(ActivityThread.java:2780)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): ... 10 more