大佬教程收集整理的这篇文章主要介绍了java.lang.ClassCastException:android.widget.LinearLayout不能被转换为android.widget.ListView,大佬教程大佬觉得挺不错的,现在分享给大家,也给大家做个参考。
package com.example.debug; import android.app.ListActivity; import android.os.bundle; import android.view.Menu; import android.view.MenuItem; public class MainActivity extends ListActivity { @Override protected void onCreate(Bundle savedInstanceStatE) { super.onCreate(savedInstanceStatE); setContentView(R.layout.activity_main); } @Override public Boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main,menu); return true; } @Override public Boolean onOptionsItemSELEcted(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button,so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_setTings) { return true; } return super.onOptionsItemSELEcted(item); } }
activity_main.xml中:
<LinearLayout xmlns:android="http://scheR_185_11845@as.android.com/apk/res/android" xmlns:tools="http://scheR_185_11845@as.android.com/tools" android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical" > <!-- Name Label --> <TextView android:id="@+id/vehicleType" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="#43bd00" android:textSize="16sp" android:textStyle="bold" android:paddingTop="6dip" android:text="Mobile1" android:paddingBottom="2dip" /> <!-- Description Label --> <TextView android:id="@+id/vehicleColor" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="#acacac" android:text="Mobile2" android:paddingBottom="2dip" /> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <!-- Cost Label --> <TextView android:id="@+id/fuel" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#000000" android:gravity="left" android:textStyle="bold" android:text="Mobile3" /> <!-- Price Label --> <TextView android:id="@+id/treadType" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#acacac" android:text="Mobile4" android:paddingBottom="2dip" /> </LinearLayout> </LinearLayout> <ListView android:id="@android:id/list" android:layout_width="match_parent" android:layout_height="wrap_content" > </ListView> </LinearLayout>
堆栈跟踪
FATAL EXCEPTION: main Process: com.example.debug,PID: 1370 java.lang.RuntimeException: Unable to start activity ComponenTinfo{Com.example.debug/com.example.debug.MainActivity}: java.lang.ClassCastException: android.widget.LinearLayout cAnnot be cast to android.widget.ListView at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) at android.app.ActivityThread.access$800(ActivityThread.java:135) at android.app.ActivityThread$H.handlemessage(ActivityThread.java:1196) at android.os.Handler.dispatchmessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5017) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.ClassCastException: android.widget.LinearLayout cAnnot be cast to android.widget.ListView at android.app.ListActivity.onContentChanged(ListActivity.java:241) at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:293) at android.app.Activity.setContentView(Activity.java:1929) at com.example.debug.MainActivity.onCreate(MainActivity.java:14) at android.app.Activity.performCreate(Activity.java:5231) at android.app.instrumentation.callActivityOnCreate(instrumentation.java:1087) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) ... 11 more
<LinearLayout xmlns:android="http://scheR_185_11845@as.android.com/apk/res/android" xmlns:tools="http://scheR_185_11845@as.android.com/tools" android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" >
你给它android:id =“@ android:id / list”的机器保留ListView小部件的id.改变它在别的东西.例如
<LinearLayout xmlns:android="http://scheR_185_11845@as.android.com/apk/res/android" xmlns:tools="http://scheR_185_11845@as.android.com/tools" android:id="@+id/my_linear_layout" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" >
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