如题,我用转入一般Activity 的方法总是会报错
运行的时候总要报ClassNotFoundException,很郁闷,新手,求高手指导。
我是按照一般的转入一个Activity的方法来操作的,是不是这样不对呢?求大家帮帮忙,谢谢~~~~~主程序代码:
package james.chen;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MyListActivity_01Activity extends Activity {private Button move_to_list = null; /** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
move_to_list = (Button)findViewById(R.id.move_to_list);
move_to_list.setOnClickListener(new ToListListener());
}
class ToListListener implements OnClickListener{
public void onClick(View v){
Intent intent = new Intent(MyListActivity_01Activity.this,MyListActivity.class);
startActivity(intent);
}
}
}下面是ListActivity代码:package james.chen;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;
public class MyListActivity extends ListActivity {ArrayList<HashMap<String,String>> list = new ArrayList<HashMap<String,String>>();
HashMap<String,String> map1 = new HashMap<String,String>();
HashMap<String,String> map2 = new HashMap<String,String>(); public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list);
map1.put("user_name", "张三");
map1.put("user_ip", "192.168.0.1");
map2.put("user_name","李四");
map2.put("user_ip", "192.168.0.2");
list.add(map1);
list.add(map2);
SimpleAdapter listAdapter = new SimpleAdapter(this,list,
R.layout.item,new String[]{"user_name","user_ip"},new int[]{R.id.user_name,R.id.user_ip});
setListAdapter(listAdapter);
}
}下面是配置文件:
1.main.xml<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:id="@+id/move_to_list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="启动一个listActivity"
/>
</LinearLayout>
2:item.xml<?xml version="1.0" encoding="utf-8"?>
<LineaLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:paddingTop="1dip"
android:paddingBottom="1dip"
>
<TextView
android:id="@+id/user_name"
android:layout_width="180dip"
android:layout_height="30dip"
android:textSize="10pt"
android:singleLine="true"
/>
<TextView
android:id="@+id/user_ip"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="right"
android:textSize="10pt"
/>
</LineaLayout>
3.list.xml<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<LinearLayout
android:id="@+id/listLinearLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<ListView
android:id="@id/android:list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:drawSelectorOnTop="false"
android:scrollbars="vertical"
>
</ListView>
</LinearLayout>
</LinearLayout>4.xxxxmanifest.xml<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="james.chen"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MyListActivity_01Activity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MyListActivity"></activity>
</application>
</manifest>
运行的时候总要报ClassNotFoundException,很郁闷,新手,求高手指导。
我是按照一般的转入一个Activity的方法来操作的,是不是这样不对呢?求大家帮帮忙,谢谢~~~~~主程序代码:
package james.chen;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MyListActivity_01Activity extends Activity {private Button move_to_list = null; /** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
move_to_list = (Button)findViewById(R.id.move_to_list);
move_to_list.setOnClickListener(new ToListListener());
}
class ToListListener implements OnClickListener{
public void onClick(View v){
Intent intent = new Intent(MyListActivity_01Activity.this,MyListActivity.class);
startActivity(intent);
}
}
}下面是ListActivity代码:package james.chen;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;
public class MyListActivity extends ListActivity {ArrayList<HashMap<String,String>> list = new ArrayList<HashMap<String,String>>();
HashMap<String,String> map1 = new HashMap<String,String>();
HashMap<String,String> map2 = new HashMap<String,String>(); public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list);
map1.put("user_name", "张三");
map1.put("user_ip", "192.168.0.1");
map2.put("user_name","李四");
map2.put("user_ip", "192.168.0.2");
list.add(map1);
list.add(map2);
SimpleAdapter listAdapter = new SimpleAdapter(this,list,
R.layout.item,new String[]{"user_name","user_ip"},new int[]{R.id.user_name,R.id.user_ip});
setListAdapter(listAdapter);
}
}下面是配置文件:
1.main.xml<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:id="@+id/move_to_list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="启动一个listActivity"
/>
</LinearLayout>
2:item.xml<?xml version="1.0" encoding="utf-8"?>
<LineaLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:paddingTop="1dip"
android:paddingBottom="1dip"
>
<TextView
android:id="@+id/user_name"
android:layout_width="180dip"
android:layout_height="30dip"
android:textSize="10pt"
android:singleLine="true"
/>
<TextView
android:id="@+id/user_ip"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="right"
android:textSize="10pt"
/>
</LineaLayout>
3.list.xml<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<LinearLayout
android:id="@+id/listLinearLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<ListView
android:id="@id/android:list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:drawSelectorOnTop="false"
android:scrollbars="vertical"
>
</ListView>
</LinearLayout>
</LinearLayout>4.xxxxmanifest.xml<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="james.chen"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MyListActivity_01Activity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MyListActivity"></activity>
</application>
</manifest>
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货