Android常见错误解析

一、错误：Unknown host api.tudou.com, throwing UnknownHostException。

解决办法：在AndroidManifest.xml中添加<uses-permission android:name="android.permission.INTERNET" />

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:

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）：

<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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