指定的孩子已經在谷歌鬧鐘代碼中有父母

我正在修改當前項目的一些Google代碼。我剛開始在這堂課中發現一個錯誤，這令人費解，因爲我根本沒有對這堂課做任何改變。指定的孩子已經在谷歌鬧鐘代碼中有父母

這裏的錯誤：

FATAL EXCEPTION: main 
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.skipmorrow.powerclock/com.skipmorrow.powerclock.SetAlarm}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2304) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2354) 
    at android.app.ActivityThread.access$600(ActivityThread.java:150) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244) 
    at android.os.Handler.dispatchMessage(Handler.java:99) 
    at android.os.Looper.loop(Looper.java:137) 
    at android.app.ActivityThread.main(ActivityThread.java:5191) 
    at java.lang.reflect.Method.invokeNative(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:511) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562) 
    at dalvik.system.NativeStart.main(Native Method) 
Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. 
    at android.view.ViewGroup.addViewInner(ViewGroup.java:3339) 
    at android.view.ViewGroup.addView(ViewGroup.java:3210) 
    at android.view.ViewGroup.addView(ViewGroup.java:3186) 
    at com.skipmorrow.powerclock.SetAlarm.onCreate(SetAlarm.java:134) 
    at android.app.Activity.performCreate(Activity.java:5104) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2258)

而這裏的代碼。就像我說的，我沒有對它做任何改變，我不認爲需要根據我的項目要求對它進行任何更改。如果沒有必要，我討厭在那裏把東西弄糟。整個項目可以在這裏找到： https://github.com/android/platform_packages_apps_alarmclock

我一種編譯API 8

// Get the main ListView and remove it from the content view. 
    ListView lv = getListView(); 
    content.removeView(lv); 

    // Create the new LinearLayout that will become the content view and 
    // make it vertical. 
    LinearLayout ll = new LinearLayout(this); 
    ll.setOrientation(LinearLayout.VERTICAL); 

    // Have the ListView expand to fill the screen minus the save/cancel 
    // buttons. 
    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
      LayoutParams.MATCH_PARENT, 
      LayoutParams.WRAP_CONTENT); 
    lp.weight = 1; 
    ll.addView(lv, lp); // error here. Line 134

來源

2013-03-04 MrGibbage

你可以嘗試直接從視圖獲取父這樣你就不會有問題。

你有

// Get the main ListView and remove it from the content view. 
ListView lv = getListView(); 
content.removeView(lv);

你需要將其更改爲

// Get the main ListView and remove it from the content view. 
ListView lv = getListView(); 
((ViewGroup)lv.getParent()).removeView(lv);

來源

2013-03-04 02:15:19 DigCamara

問題解決了。奇怪的是，簡單的東西實際上是在谷歌代碼中。哦，好的，謝謝！ – MrGibbage 2013-03-04 02:24:49

指定的孩子已經在谷歌鬧鐘代碼中有父母

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