Android_列表视图_新活动
我可以在线性布局中定义文本视图和列表视图吗 如果是,那么我试图定义一个列表视图,并希望每个列表项打开一个新的活动。但是我的活动没有运行,它显示“很遗憾,你的应用程序被迫关闭”。请帮忙 代码如下:Android_列表视图_新活动,android,android-listview,Android,Android Listview,我可以在线性布局中定义文本视图和列表视图吗 如果是,那么我试图定义一个列表视图,并希望每个列表项打开一个新的活动。但是我的活动没有运行,它显示“很遗憾,你的应用程序被迫关闭”。请帮忙 代码如下: public class Second_listview extends ListActivity { static final String[] type = new String[]{ "Array", "Strings" }; @Override protected void
public class Second_listview extends ListActivity
{
static final String[] type = new String[]{
"Array", "Strings"
};
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.second_listview);
// setting up list view
setListAdapter (new ArrayAdapter<String>(this, R.layout.second_listview, type));
ListView list = getListView();
list.setTextFilterEnabled(true);
list.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> arg0, View view, int arg2,
long arg3) {
// TODO Auto-generated method stub
//liking each list item to start a new activity
switch(arg2)
{
case 1 : Intent myIntent1 = new Intent(view.getContext(), Array_list.class);
startActivityForResult(myIntent1, 0);
break;
case 2 : Intent myIntent2 = new Intent(view.getContext(), String_list.class);
startActivityForResult(myIntent2, 0);
break;
}
}
});
}
}
公共类第二个\u listview扩展ListActivity
{
静态最终字符串[]类型=新字符串[]{
“数组”、“字符串”
};
@凌驾
创建时受保护的void(Bundle savedInstanceState){
//TODO自动生成的方法存根
super.onCreate(savedInstanceState);
setContentView(R.layout.second_listview);
//设置列表视图
setListAdapter(新的ArrayAdapter(this,R.layout.second_listview,type));
ListView list=getListView();
list.setTextFilterEnabled(true);
list.setOnItemClickListener(新的OnItemClickListener(){
@凌驾
public void onItemClick(AdapterView arg0、View视图、int arg2、,
长arg3){
//TODO自动生成的方法存根
//喜欢每个列表项来开始新的活动吗
开关(arg2)
{
案例1:Intent myIntent1=newintent(view.getContext(),Array_list.class);
startActivityForResult(myIntent1,0);
打破
案例2:Intent myIntent2=newintent(view.getContext(),String_list.class);
startActivityForResult(myIntent2,0);
打破
}
}
});
}
}
将listview的Id设置为“@android:Id/list”,如下所述
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
这可能是一个问题。如有可能,也请告知我们您的布局文件。更改
setListAdapter (new ArrayAdapter<String>(this,R.layout.main, type));
setListAdapter(新的ArrayAdapter(this,R.layout.main,type));
进入
setListAdapter(新的ArrayAdapter(这个,android.R.layout.simple_list_item_1,type));
请参阅下面的完整代码
public class Second_listview extends ListActivity
{
static final String[] type = new String[]{
"Array", "Strings"
};
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.second_listview);
// setting up list view
setListAdapter (new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, type));
ListView list = getListView();
list.setTextFilterEnabled(true);
list.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> arg0, View view, int arg2,
long arg3) {
// TODO Auto-generated method stub
//liking each list item to start a new activity
switch(arg2)
{
case 1 : Intent myIntent1 = new Intent(view.getContext(), Array_list.class);
startActivityForResult(myIntent1, 0);
break;
case 2 : Intent myIntent2 = new Intent(view.getContext(), String_list.class);
startActivityForResult(myIntent2, 0);
break;
}
}
});
}
}
公共类第二个\u listview扩展ListActivity
{
静态最终字符串[]类型=新字符串[]{
“数组”、“字符串”
};
@凌驾
创建时受保护的void(Bundle savedInstanceState){
//TODO自动生成的方法存根
super.onCreate(savedInstanceState);
setContentView(R.layout.second_listview);
//设置列表视图
setListAdapter(新的ArrayAdapter(这个,android.R.layout.simple_list_item_1,type));
ListView list=getListView();
list.setTextFilterEnabled(true);
list.setOnItemClickListener(新的OnItemClickListener(){
@凌驾
public void onItemClick(AdapterView arg0、View视图、int arg2、,
长arg3){
//TODO自动生成的方法存根
//喜欢每个列表项来开始新的活动吗
开关(arg2)
{
案例1:Intent myIntent1=newintent(view.getContext(),Array_list.class);
startActivityForResult(myIntent1,0);
打破
案例2:Intent myIntent2=newintent(view.getContext(),String_list.class);
startActivityForResult(myIntent2,0);
打破
}
}
});
}
}
只要做以下事情
FirstActivity(MainActivity.java)
}
SecondActivity(Next.java)
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000000">
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" >
</ListView>
</RelativeLayout>
nextpage.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="200dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="192dp"
android:text="TextView" />
</RelativeLayout>
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.getlistitemvalueinnewactivity"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Next"></activity>
</application>
</manifest>
请发布日志猫错误..您没有通过findviewby id初始化列表视图。日志猫请添加(sry我是新手:()用这个link@chintan凯蒂亚:谢谢你告诉我。我做错了。但还是没用!我把它改成了android.R.id.list,但我没有得到android.R.layout.simple\u list\u item\u 1?
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000000">
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" >
</ListView>
</RelativeLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="200dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="192dp"
android:text="TextView" />
</RelativeLayout>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.getlistitemvalueinnewactivity"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Next"></activity>
</application>
</manifest>