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Aşağıdaki kodda neden ClassCastException alıyorum emin değilim. Aktivite için ListActivity değiştirme, hatayı düzeltir, ancak oluşturmaya çalıştığım daha büyük kodun bir parçası olduğu için ListActivity istiyorum. Herhangi bir yardım takdir edilecektir. Teşekkürjava.lang.ClassCastException: android.widget.LinearLayout android.widget.ListView için yayınlanamaz
MainActivity.java
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:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.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>
StackTrace
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