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Android的常见错误及解决办法

 

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

      解决办法:在AndroidManifest.xml中添加

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:,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:

 

            android:layout_width="fill_parent"

            android:layout_height="fill_parent"

            android:drawSelectorOnTop="false"/>

tudouPlayer.java:

public class tudouPlayer extends ListActivity implements OnClickListener {  

  

    @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"(在ListActivity中的main.xml中不能用android:id = "@+id/list"来加list的id,不然adb 也会报错setContentView(R.layout.main);)

            android:layout_width="fill_parent"

            android:layout_height="fill_parent"

            android:drawSelectorOnTop="false"/>

 

摘自Tony的攻城学习博客

补充:移动开发 , Android ,
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