ScrollView中的Android TextView不工作 - 强制关闭
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:ScrollView中的Android TextView不工作 - 强制关闭
<?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);
}
}
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。
@Rekar是的错误是在onCreate而不是XML。它甚至告诉你'在rg.ah.TutViewerActivity.onCreate(TutViewerActivity.java:25'所以第25行。我与Rotemmiz这可能是你的setContentView() – Blundell 2012-02-11 00:43:28
Sry它花了我很长时间。我添加了未经编辑的代码让我们看看,我所做的不是将textview放入滚动视图中,而是将其保存在顶层,并添加了'setMovementMethod'代码以允许文本作为临时修订滚动。我仍然非常感兴趣修复我以前的代码。 – Rekar 2012-02-11 02:44:50
如果多行TextView包含的文本比它能显示的多,它将会滚动。 – Squonk 2012-02-10 20:32:05
发布logcat错误消息 – kosa 2012-02-10 20:33:26
LogCat强制关闭时会说什么? – CaseyB 2012-02-10 20:33:54