刚学android,写了一段代码运行部起来,高手们帮忙看下 public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); 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 [2010-11-04 17:28:24 - EX0413] ------------------------------[2010-11-04 17:28:24 - EX0413] Android Launch![2010-11-04 17:28:24 - EX0413] adb is running normally.[2010-11-04 17:28:24 - EX0413] Performing com.test.EX0413 activity launchlog:[2010-11-04 17:28:24 - EX0413] Automatic Target Mode: Preferred AVD 'Froyo' is available on emulator 'emulator-5554'[2010-11-04 17:28:24 - EX0413] Uploading EX0413.apk onto device 'emulator-5554'[2010-11-04 17:28:24 - EX0413] Installing EX0413.apk...[2010-11-04 17:28:27 - EX0413] Success![2010-11-04 17:28:28 - EX0413] Starting activity com.test.EX0413 on device emulator-5554[2010-11-04 17:28:29 - EX0413] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.test/.EX0413 }另外 2楼所述那个我在下面加的setContentView(myLinearLayout);用的不是layout/main.xml而是layout/R.layout.my_simple_list_item.xml具体内容:<?xml version="1.0" encoding="utf-8"?><CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/myCheckedTextView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor = "@drawable/black" > </CheckedTextView> mTextView = new TextView(this);不能这么定义的!、ps:log是说的 logcat这个标签里的内容!不是console! 那你设置的setContentView(myLinearLayout);也不对啊。应该设置为setContentView(R.layout.my_simple_list_item);你帖出来的log也没报什么错误。 楼主要先设置super.onCreate(savedInstanceState);setContentView(R.layout.my_simple_list_item);后面再设置setContentView(myLinearLayout);才行。 参考代码:TestListView.javapackage com.ray.test;import java.util.ArrayList;import java.util.HashMap;import android.app.Activity;import android.os.Bundle;import android.view.ContextMenu;import android.view.MenuItem;import android.view.View;import android.view.ContextMenu.ContextMenuInfo;import android.view.View.OnCreateContextMenuListener;import android.widget.AdapterView;import android.widget.ListView;import android.widget.SimpleAdapter;import android.widget.AdapterView.OnItemClickListener;public class TestListView extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //绑定Layout里面的ListView ListView list = (ListView) findViewById(R.id.ListView01); //生成动态数组,加入数据 ArrayList<HashMap<String, Object>> listItem = new ArrayList<HashMap<String, Object>>(); for(int i=0;i<10;i++) { HashMap<String, Object> map = new HashMap<String, Object>(); map.put("ItemImage", R.drawable.checked);//图像资源的ID map.put("ItemTitle", "Level "+i); map.put("ItemText", "Finished in 1 Min 54 Secs, 70 Moves! "); listItem.add(map); } //生成适配器的Item和动态数组对应的元素 SimpleAdapter listItemAdapter = new SimpleAdapter(this,listItem,//数据源 R.layout.list_items,//ListItem的XML实现 //动态数组与ImageItem对应的子项 new String[] {"ItemImage","ItemTitle", "ItemText"}, //ImageItem的XML文件里面的一个ImageView,两个TextView ID new int[] {R.id.ItemImage,R.id.ItemTitle,R.id.ItemText} ); //添加并且显示 list.setAdapter(listItemAdapter); //添加点击 list.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { setTitle("点击第"+arg2+"个项目"); } }); //添加长按点击 list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() { @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { menu.setHeaderTitle("长按菜单-ContextMenu"); menu.add(0, 0, 0, "弹出长按菜单0"); menu.add(0, 1, 0, "弹出长按菜单1"); } }); } //长按菜单响应函数 @Override public boolean onContextItemSelected(MenuItem item) { setTitle("点击了长按菜单里面的第"+item.getItemId()+"个项目"); return super.onContextItemSelected(item); }}list_items.xml<?xml version="1.0" encoding="utf-8"?><RelativeLayout android:id="@+id/RelativeLayout01" android:layout_width="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="wrap_content" android:paddingBottom="4dip" android:paddingLeft="12dip" android:paddingRight="12dip"><ImageView android:paddingTop="12dip" android:layout_alignParentRight="true" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/ItemImage" /> <TextView android:text="TextView01" android:layout_height="wrap_content" android:textSize="20dip" android:layout_width="fill_parent" android:id="@+id/ItemTitle" /><TextView android:text="TextView02" android:layout_height="wrap_content" android:layout_width="fill_parent" android:layout_below="@+id/ItemTitle" android:id="@+id/ItemText" /></RelativeLayout>main.xml<?xml version="1.0" encoding="utf-8"?><LinearLayout android:id="@+id/LinearLayout01" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"><ListView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/ListView01" /></LinearLayout> 谢谢大家了,原因已经找到没有重新创建listView对象在mListView.setBackgroundColor(android.graphics.Color.LTGRAY);之前加了一句mListView = new ListView(this); 变态需求,求高人指点! APN开关啊急!!!!!!!!!!!!!!! android开发平台中插入TF卡出现的错误 平板电脑文字编辑? SurfaceView的drawBitmap方法执行第一遍时为什么会很慢 想从事android游戏开发,android游戏的收入来源是什么? 一个XML文件可以有几个命名空间 谁能教我怎么配置android 环境 安卓里复用按钮监听怎么this报错?在新activity里的 abd 批处理重启一批安卓设备,跪求高手赐予一个批处理文件,自动执行终端设备的重启 Android如何适配不同品牌的手机呢?需要移植吗? 视频播放问题
[2010-11-04 17:28:24 - EX0413] Android Launch!
[2010-11-04 17:28:24 - EX0413] adb is running normally.
[2010-11-04 17:28:24 - EX0413] Performing com.test.EX0413 activity launch
log:[2010-11-04 17:28:24 - EX0413] Automatic Target Mode: Preferred AVD 'Froyo' is available on emulator 'emulator-5554'
[2010-11-04 17:28:24 - EX0413] Uploading EX0413.apk onto device 'emulator-5554'
[2010-11-04 17:28:24 - EX0413] Installing EX0413.apk...
[2010-11-04 17:28:27 - EX0413] Success!
[2010-11-04 17:28:28 - EX0413] Starting activity com.test.EX0413 on device emulator-5554
[2010-11-04 17:28:29 - EX0413] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.test/.EX0413 }另外 2楼所述那个我在下面加的
setContentView(myLinearLayout);
用的不是layout/main.xml而是layout/R.layout.my_simple_list_item.xml
具体内容:
<?xml version="1.0" encoding="utf-8"?>
<CheckedTextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/myCheckedTextView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor = "@drawable/black"
>
</CheckedTextView>
不能这么定义的!、
ps:log是说的 logcat这个标签里的内容!不是console!
应该设置为setContentView(R.layout.my_simple_list_item);
你帖出来的log也没报什么错误。
super.onCreate(savedInstanceState);
setContentView(R.layout.my_simple_list_item);
后面再设置setContentView(myLinearLayout);才行。
TestListView.java
package com.ray.test;import java.util.ArrayList;
import java.util.HashMap;import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnCreateContextMenuListener;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.AdapterView.OnItemClickListener;public class TestListView extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//绑定Layout里面的ListView
ListView list = (ListView) findViewById(R.id.ListView01);
//生成动态数组,加入数据
ArrayList<HashMap<String, Object>> listItem
= new ArrayList<HashMap<String, Object>>();
for(int i=0;i<10;i++)
{
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("ItemImage", R.drawable.checked);//图像资源的ID
map.put("ItemTitle", "Level "+i);
map.put("ItemText", "Finished in 1 Min 54 Secs, 70 Moves! ");
listItem.add(map);
}
//生成适配器的Item和动态数组对应的元素
SimpleAdapter listItemAdapter = new SimpleAdapter(this,listItem,//数据源
R.layout.list_items,//ListItem的XML实现
//动态数组与ImageItem对应的子项
new String[] {"ItemImage","ItemTitle", "ItemText"},
//ImageItem的XML文件里面的一个ImageView,两个TextView ID
new int[] {R.id.ItemImage,R.id.ItemTitle,R.id.ItemText}
);
//添加并且显示
list.setAdapter(listItemAdapter);
//添加点击
list.setOnItemClickListener(new OnItemClickListener() { @Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
setTitle("点击第"+arg2+"个项目");
}
});
//添加长按点击
list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
menu.setHeaderTitle("长按菜单-ContextMenu");
menu.add(0, 0, 0, "弹出长按菜单0");
menu.add(0, 1, 0, "弹出长按菜单1");
}
});
}
//长按菜单响应函数
@Override
public boolean onContextItemSelected(MenuItem item) {
setTitle("点击了长按菜单里面的第"+item.getItemId()+"个项目");
return super.onContextItemSelected(item);
}
}list_items.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="@+id/RelativeLayout01"
android:layout_width="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:paddingBottom="4dip"
android:paddingLeft="12dip"
android:paddingRight="12dip">
<ImageView
android:paddingTop="12dip"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/ItemImage"
/>
<TextView
android:text="TextView01"
android:layout_height="wrap_content"
android:textSize="20dip"
android:layout_width="fill_parent"
android:id="@+id/ItemTitle"
/>
<TextView
android:text="TextView02"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_below="@+id/ItemTitle"
android:id="@+id/ItemText"
/>
</RelativeLayout>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:id="@+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<ListView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/ListView01"
/>
</LinearLayout>
没有重新创建listView对象
在mListView.setBackgroundColor(android.graphics.Color.LTGRAY);
之前加了一句
mListView = new ListView(this);