Android应用常见错误
二、Unable to find explicit activity class?have you declared this activity in yourAndroidManifest.xml?
解决办法：
在AndroidManifest.xml的application段添加声明：<activityandroid:name=".ActivityName" />,
详情见：
http://stackoverflow.com/questions/736571/using-intent-in-an-android-application-to-show-another-activity
三、ListActivity setContentView错误：
代码及相关xml如下：
main.xml:
<ListView android:id="@+id/list"
???????????android:layout_width="fill_parent"
???????????android:layout_height="fill_parent"
???????????android:drawSelectorOnTop="false"/>
tudouPlayer.java:
public class tudouPlayer extends ListActivity implementsOnClickListener
{???
???@Override
??? public voidonCreate(Bundle savedInstanceState)
??? {
???????super.onCreate(savedInstanceState);
???????setContentView(R.layout.main);
??? }
}
编译不会报错，运行时，adb打出来的错误为：
E/AndroidRuntime(? 701):java.lang.RuntimeException: Unable to start activityComponentInfo{com.java.tudouPlayer/com.java.tudouPlayer.tudouPlayer}:java.lang.RuntimeException: Your content must have a ListView whoseid attribute is 'android.R.id.list'
解决办法：
将main.xml中，上面贴出来的那段改为（原因见注释）：
???????<!-- Here is the list. Since we are using aListActivity, we
????????????have to call it "@android:id/list" so ListActivity will
????????????find it -->
??????
???????<ListView android:id="@android:id/list"
???????????android:layout_width="fill_parent"
???????????android:layout_height="fill_parent"
???????????android:drawSelectorOnTop="false"/>