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Android常见异常解析

2012-09-27 
Android常见错误解析二、Unable to find explicit activity class? have you declared this activity in yo

Android常见错误解析

二、Unable to find explicit activity class? have you declared this activity in your AndroidManifest.xml?

???? 解决办法:在AndroidManifest.xml的application段添加声明:<activity android: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 implements OnClickListener {???
??? /** Called when the activity is first created. */
??? @Override
??? public void onCreate(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 activity ComponentInfo{com.java.tudouPlayer/com.java.tudouPlayer.tudouPlayer}: java.lang.RuntimeException: Your content must have a ListView whose id 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 a ListActivity, 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"/>

四、adb push错误

mksdcard 1024M sdcard1.iso

adb push android.jpg /sdcard/android.jpg

error:failed to copy 'android.jpg' to '/sdcard/android.jpg': Read-only file system

解决办法:

删除sdcard1.iso;

mksdcard 1024M sdcard

adb push android.jpg /sdcard/android.jpg

?

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