片段 - 指定的孩子已经有一个父。你必须先调用removeView()对孩子的父 [英] Fragments - The specified child already has a parent. You must call removeView() on the child's parent first
本文介绍了片段 - 指定的孩子已经有一个父。你必须先调用removeView()对孩子的父的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我收到此错误。我尝试了许多解决方案,但我coudnt解决这个问题。帮我!我需要添加表面观,用碎片的按钮活动。
CamActivity.java:
公共类CamActivity扩展FragmentActivity {
@覆盖
保护无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_cam);
FragmentManager FM = getSupportFragmentManager();
片段片段= fm.findFragmentById(R.id.fragmentContainer);
如果(片段== NULL){
片段=新CamFragment();
fm.beginTransaction()
。新增(R.id.fragmentContainer,片段)
。承诺();
}
}
}
CamFragment.java:
公共类CamFragment扩展片段{
私有静态最后字符串变量=CamFragment;
私人相机mCamera;
私人SurfaceView mSurfaceView;
@覆盖
公共查看onCreateView(LayoutInflater吹气,父母的ViewGroup,捆绑savedInstanceState){
视图V = inflater.inflate(R.layout.camera_fragment,父);
按钮capturePic =(按钮)v.findViewById(R.id.img_capture);
capturePic.setOnClickListener(新View.OnClickListener(){
@覆盖
公共无效的onClick(视图v){
getActivity()完成()。
}
});
mSurfaceView =(SurfaceView)v.findViewById(R.id.surfaceView1);
返回伏;
}
}
错误:
04-18 13:24:12.735:E / AndroidRuntime(6321):致命异常:主要
04-18 13:24:12.735:E / AndroidRuntime(6321):java.lang.RuntimeException的:无法启动的活动ComponentInfo {com.pack.camdictionary / com.pack.camdictionary.CamActivity}:java.lang.IllegalStateException:本指定的孩子已经有一个父。你必须先调用removeView()对孩子的家长。
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1728)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1747)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.app.ActivityThread.access $ 1500(ActivityThread.java:155)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:993)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.os.Handler.dispatchMessage(Handler.java:130)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.os.Looper.loop(的SourceFile:351)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.app.ActivityThread.main(ActivityThread.java:3814)
04-18 13:24:12.735:E / AndroidRuntime(6321):在java.lang.reflect.Method.invokeNative(本机方法)
04-18 13:24:12.735:E / AndroidRuntime(6321):在java.lang.reflect.Method.invoke(Method.java:538)
04-18 13:24:12.735:E / AndroidRuntime(6321):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:901)
04-18 13:24:12.735:E / AndroidRuntime(6321):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:659)
04-18 13:24:12.735:E / AndroidRuntime(6321):在dalvik.system.NativeStart.main(本机方法)
04-18 13:24:12.735:E / AndroidRuntime(6321):致:java.lang.IllegalStateException:指定的孩子已经有一个父。你必须先调用removeView()对孩子的家长。
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.view.ViewGroup.addViewInner(ViewGroup.java:2007)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.view.ViewGroup.addView(ViewGroup.java:1902)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.view.ViewGroup.addView(ViewGroup.java:1859)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.view.ViewGroup.addView(ViewGroup.java:1839)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.support.v4.app.NoSaveStateFrameLayout.wrap(NoSaveStateFrameLayout.java:40)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:931)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:570)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1166)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.app.Activity.performStart(Activity.java:3837)
04-18 13:24:12.735:E / AndroidRuntime(6321):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1701)
04-18 13:24:12.735:E / AndroidRuntime(6321):11 ...更多
解决方案
尝试更换
视图V = inflater.inflate(R.layout.camera_fragment,父);
通过
视图V = inflater.inflate(R.layout.camera_fragment,父母,假);
或
视图V = inflater.inflate(R.layout.camera_fragment,NULL);
I am getting this error. I tried many solutions but I coudnt solve this. Help me! I need to add the surface view and the button to the activity using fragments.
CamActivity.java:
public class CamActivity extends FragmentActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cam);
FragmentManager fm = getSupportFragmentManager();
Fragment fragment = fm.findFragmentById(R.id.fragmentContainer);
if(fragment == null) {
fragment = new CamFragment();
fm.beginTransaction()
.add(R.id.fragmentContainer, fragment)
.commit();
}
}
}
CamFragment.java:
public class CamFragment extends Fragment {
private static final String TAG = "CamFragment";
private Camera mCamera;
private SurfaceView mSurfaceView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.camera_fragment, parent);
Button capturePic = (Button)v.findViewById(R.id.img_capture);
capturePic.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getActivity().finish();
}
});
mSurfaceView = (SurfaceView)v.findViewById(R.id.surfaceView1);
return v;
}
}
Error:
04-18 13:24:12.735: E/AndroidRuntime(6321): FATAL EXCEPTION: main
04-18 13:24:12.735: E/AndroidRuntime(6321): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.pack.camdictionary/com.pack.camdictionary.CamActivity}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1728)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1747)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.app.ActivityThread.access$1500(ActivityThread.java:155)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:993)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.os.Handler.dispatchMessage(Handler.java:130)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.os.Looper.loop(SourceFile:351)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.app.ActivityThread.main(ActivityThread.java:3814)
04-18 13:24:12.735: E/AndroidRuntime(6321): at java.lang.reflect.Method.invokeNative(Native Method)
04-18 13:24:12.735: E/AndroidRuntime(6321): at java.lang.reflect.Method.invoke(Method.java:538)
04-18 13:24:12.735: E/AndroidRuntime(6321): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901)
04-18 13:24:12.735: E/AndroidRuntime(6321): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:659)
04-18 13:24:12.735: E/AndroidRuntime(6321): at dalvik.system.NativeStart.main(Native Method)
04-18 13:24:12.735: E/AndroidRuntime(6321): Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.view.ViewGroup.addViewInner(ViewGroup.java:2007)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.view.ViewGroup.addView(ViewGroup.java:1902)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.view.ViewGroup.addView(ViewGroup.java:1859)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.view.ViewGroup.addView(ViewGroup.java:1839)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.support.v4.app.NoSaveStateFrameLayout.wrap(NoSaveStateFrameLayout.java:40)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:931)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:570)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1166)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.app.Activity.performStart(Activity.java:3837)
04-18 13:24:12.735: E/AndroidRuntime(6321): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1701)
04-18 13:24:12.735: E/AndroidRuntime(6321): ... 11 more
解决方案
Try to replace
View v = inflater.inflate(R.layout.camera_fragment, parent);
With
View v = inflater.inflate(R.layout.camera_fragment, parent, false);
or
View v = inflater.inflate(R.layout.camera_fragment, null);
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