Question

我尝试创建透明活动，因此我为活动提供以下样式：

<style name="Theme.Transparent" parent="android:Theme">
    <item name="android:windowIsTranslucent">true</item>
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowIsFloating">true</item>
    <item name="android:backgroundDimEnabled">false</item>
</style>

我不知道为什么会崩溃应用程序。

知道为什么吗？

编辑：这是我的logcat，我是新手，所以我对调试它并不了解。

05-14 06:25:08.919    1218-1307/system_process I/ActivityManager﹕ START u0 {cmp=com.myapp.enterprise/.GreenViewActivity} from uid 10057 on display 0
05-14 06:25:08.924    1218-1265/system_process W/AudioTrack﹕ AUDIO_OUTPUT_FLAG_FAST denied by client
05-14 06:25:08.959    6744-6744/com.myapp.enterprise D/AndroidRuntime﹕ Shutting down VM
05-14 06:25:08.959    6744-6744/com.myapp.enterprise E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.myapp.enterprise, PID: 6744
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp.enterprise/com.myapp.enterprise.GreenViewActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
            at android.app.ActivityThread.access$800(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5257)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
     Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
            at android.support.v7.app.AppCompatDelegateImplBase.onCreate(AppCompatDelegateImplBase.java:113)
            at android.support.v7.app.AppCompatDelegateImplV7.onCreate(AppCompatDelegateImplV7.java:146)
            at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:59)
            at com.myapp.enterprise.GreenViewActivity.onCreate(GreenViewActivity.java:13)
            at android.app.Activity.performCreate(Activity.java:5990)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
            at android.app.ActivityThread.access$800(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5257)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
05-14 06:25:08.965    1218-7949/system_process W/ActivityManager﹕ Force finishing activity 1 com.myapp.enterprise/.GreenViewActivity
05-14 06:25:08.978    1218-7949/system_process W/ActivityManager﹕ Force finishing activity 2 com.myapp.enterprise/.NoteActivity
05-14 06:25:09.083    1218-2572/system_process I/OpenGLRenderer﹕ Initialized EGL, version 1.4
05-14 06:25:09.110    1218-2572/system_process W/EGL_emulation﹕ eglSurfaceAttrib not implemented
05-14 06:25:09.110    1218-2572/system_process W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0x9d932880, error=EGL_SUCCESS
05-14 06:25:09.490    1218-1236/system_process W/ActivityManager﹕ Activity pause timeout for ActivityRecord{5ebb3cd u0 com.myapp.enterprise/.GreenViewActivity t546 f}

Answer 1

只需在Menifest xml文件的活动中使用此主题即可创建透明活动

android:theme="@android:style/Theme.Translucent.NoTitleBar.Fullscreen"

Answer 2

您需要使用parent="@style/Theme.AppCompat"作为父级而非当前parent="android:Theme"

Answer 3

如果您要从AppCompactActivity或ActionBarActivity扩展您的活动，则必须使用您的父主题

 <style name="Theme.Transparent"        parent="@style/Theme.AppCompat.Light.DarkActionBar">

适用于整个应用程序或仅用于激活

透明活动使应用程序崩溃

3 个答案: