Android 未调用onListItemClick。我不知道为什么
这是我的活动:我试图调用“onListItemClicked”,但它仅受ListActivity支持?我想使用ActionBarActivity,因为我想要一个带有“注销”和“更新”的栏。对于ListActivity,它不会显示。知道我做错了什么吗Android 未调用onListItemClick。我不知道为什么,android,listview,android-actionbar,android-actionbaractivity,Android,Listview,Android Actionbar,Android Actionbaractivity,这是我的活动:我试图调用“onListItemClicked”,但它仅受ListActivity支持?我想使用ActionBarActivity,因为我想要一个带有“注销”和“更新”的栏。对于ListActivity,它不会显示。知道我做错了什么吗 package com.example.test.test; import android.content.Intent; import android.support.v7.app.ActionBarActivity; import androi
package com.example.test.test;
import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListView;
import com.parse.FindCallback;
import com.parse.Parse;
import com.parse.ParseException;
import com.parse.ParseObject;
import com.parse.ParseQuery;
import com.parse.ParseUser;
import java.util.List;
public class HomepageActivity extends ActionBarActivity {
protected List<ParseObject> mStatus;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_homepage);
final ListView listView = (ListView)findViewById(android.R.id.list);
Parse.initialize(this, "dcAMNT7HVOmOw0JDMelkg5UDr388O3xSgICiSK3N", "1aHIAldsUScxlbkWGkoyvHoHWM9YEtpTb6QIijrb");
ParseUser currentUser = ParseUser.getCurrentUser();
if (currentUser != null) {
// show user the homepage status
ParseQuery<ParseObject> query = ParseQuery.getQuery("Status");
query.orderByDescending("createdAt");
query.findInBackground(new FindCallback<ParseObject>() {
public void done(List<ParseObject> status, ParseException e) {
if (e == null) {
//success
mStatus = status;
StatusAdapter adapter = new StatusAdapter(getApplicationContext(), mStatus);
listView.setAdapter(adapter);
} else {
//there was a problem, Alert user
}
}
});
} else {
// show the login screen
Intent takeUserToLoginScreen = new Intent(HomepageActivity.this, LoginActivity.class);
startActivity(takeUserToLoginScreen);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
switch (id) {
case R.id.updateStatus:
//take user to update status activity
Intent intent = new Intent(this, UpdateStatusActivity.class);
startActivity(intent);
break;
case R.id.logoutUser:
//log out the user
ParseUser.logOut();
//take user back to login screen
Intent takeUserToLogin = new Intent(this, LoginActivity.class);
startActivity(takeUserToLogin);
break;
}
return super.onOptionsItemSelected(item);
}
OnListItemClick...
}
package com.example.test.test;
导入android.content.Intent;
导入android.support.v7.app.ActionBarActivity;
导入android.os.Bundle;
导入android.view.Menu;
导入android.view.MenuItem;
导入android.widget.ListView;
导入com.parse.FindCallback;
导入com.parse.parse;
导入com.parse.ParseException;
导入com.parse.ParseObject;
导入com.parse.ParseQuery;
导入com.parse.ParseUser;
导入java.util.List;
公共类HomepageActivity扩展了ActionBarActivity{
受保护列表mStatus;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_主页);
最终ListView ListView=(ListView)findViewById(android.R.id.list);
初始化(这是“dcAMNT7HVOmOw0JDMelkg5UDr388O3xSgICiSK3N”,“1hialdsuscxlbkwgkoyvhohwm9yetptb6qiijrb”);
ParseUser currentUser=ParseUser.getCurrentUser();
如果(currentUser!=null){
//向用户显示主页状态
ParseQuery=ParseQuery.getQuery(“状态”);
query.orderByDescending(“createdAt”);
findInBackground(新的FindCallback(){
公共作废完成(列表状态,Parsee异常){
如果(e==null){
//成功
mStatus=状态;
StatusAdapter=新的StatusAdapter(getApplicationContext(),mStatus);
setAdapter(适配器);
}否则{
//出现问题,请提醒用户
}
}
});
}否则{
//显示登录屏幕
Intent takeUserToLoginScreen=newintent(HomepageActivity.this,LoginActivity.class);
startActivity(takeUserToLoginScreen);
}
}
@凌驾
公共布尔onCreateOptions菜单(菜单){
//为菜单充气;这会将项目添加到操作栏(如果存在)。
getMenuInflater().充气(右菜单菜单菜单主菜单);
返回true;
}
@凌驾
公共布尔值onOptionsItemSelected(菜单项项){
//处理操作栏项目单击此处。操作栏将
//自动处理Home/Up按钮上的点击,只要
//在AndroidManifest.xml中指定父活动时。
int id=item.getItemId();
开关(id){
案例R.id.updateStatus:
//带用户更新状态活动
Intent Intent=新的Intent(这是UpdateStatusActivity.class);
星触觉(意向);
打破
案例R.id.logout用户:
//注销用户
ParseUser.logOut();
//将用户带回登录屏幕
Intent takeUserToLogin=新Intent(这是LoginActivity.class);
startActivity(takeUserToLogin);
打破
}
返回super.onOptionsItemSelected(项目);
}
OnListItemClick。。。
}
以下是我的布局:
<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"
tools:context=".MainActivity">
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent">
</ListView>
</RelativeLayout>
使用McClickListener
listView .setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> adapter, View v, int position,
long arg3)
{
// Do Something on List ItemClick
}
});
listView.setOnItemClickListener(新的OnItemClickListener()
{
@凌驾
公共单击(适配器视图适配器,视图v,内部位置,
长arg3)
{
//在列表项上执行某些操作单击
}
});
我不明白我应该把这个放在哪里?你可以把这些代码放在final ListView ListView=(ListView)findviewbyd(android.R.id.list)下面;声明。很高兴帮助您:-)