ScrollView中的Android TextView不工作 - 强制关闭

Question

我试图创建一个能够滚动大量文本的textview。我将它嵌套在scrollview中，当试图测试它时，我的手机和平板电脑上的力会关闭。当我运行没有滚动视图，它的工作原理，但显然不滚动。以下是我在为我的布局XML文件：

<?xml version="1.0" encoding="utf-8"?> 
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="fill_parent" android:layout_height="fill_parent" 
android:scrollbars="horizontal" android:isScrollContainer="true">  
<LinearLayout 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:gravity="center" 
    android:orientation="vertical" > 

    <TextView 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:id="@+id/tutView"> 

    </TextView> 
</LinearLayout> 
</ScrollView> 

编辑：logcat的信息：

02-10 14:51:44.402: W/dalvikvm(5948): threadid=1: thread exiting with uncaught exception (group=0x40a3c1f8) 
02-10 14:51:44.414: E/AndroidRuntime(5948): FATAL EXCEPTION: main 
02-10 14:51:44.414: E/AndroidRuntime(5948): java.lang.RuntimeException: Unable to start activity ComponentInfo{rg.ah/rg.ah.TutViewerActivity}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.app.ActivityThread.access$600(ActivityThread.java:123) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.os.Handler.dispatchMessage(Handler.java:99) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.os.Looper.loop(Looper.java:137) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.app.ActivityThread.main(ActivityThread.java:4424) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at java.lang.reflect.Method.invokeNative(Native Method) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at java.lang.reflect.Method.invoke(Method.java:511) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at dalvik.system.NativeStart.main(Native Method) 
02-10 14:51:44.414: E/AndroidRuntime(5948): Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.view.ViewGroup.addViewInner(ViewGroup.java:3337) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.view.ViewGroup.addView(ViewGroup.java:3208) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.view.ViewGroup.addView(ViewGroup.java:3188) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:260) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.app.Activity.setContentView(Activity.java:1855) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at rg.ah.TutViewerActivity.onCreate(TutViewerActivity.java:25) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.app.Activity.performCreate(Activity.java:4465) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 
02-10 14:51:44.414: E/AndroidRuntime(5948):  ... 11 more 
02-10 14:51:44.496: D/dalvikvm(5948): GC_CONCURRENT freed 192K, 4% free 9285K/9607K, paused 2ms+9ms 

编辑2：增加了我的onCreate有问题的错误。这需要在主视图上的列表中触及的项目，并在文本视图中显示更多信息。

public class TutViewerActivity extends Activity { 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.textview); 

    Intent launchingIntent = getIntent(); 
    String content = launchingIntent.getData().toString(); 

    TextView viewer = (TextView) findViewById(R.id.tutView); 
    viewer.setMovementMethod(new ScrollingMovementMethod()); 
    viewer.setText(Html.fromHtml(content)); 

    setContentView(viewer); 
} 
} 

Answer 1

例外是告诉你IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first。

这意味着您尝试在另一个视图中放置一个父视图。

确保你没有setContentView(R.id.tutView)或类似的东西。

如果您的布局xml的名称是main.xml，那么正确的做法是setContentView(R.layout.main)。

编辑

你为什么写这条线？ setContentView(viewer);这是什么错误。

你已经将它的父母设置为内容视图，删除它，你就没事。