50 Android fragment 输入_确定_更新
rightlist.xml (加载到 fragment)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<!-- 注意 id 的使用 -->
<ListView android:id="@id/android:list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#00FF00"
android:layout_weight="1"
android:drawSelectorOnTop="false"/>
</LinearLayout>
RightFragment extends ListFragment
RightFragment.java 代码：
package com.example.android_fragment_loadermanager;
import java.util.ArrayList;
import java.util.List;
import android.app.ListFragment;
import android.app.LoaderManager;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.CursorLoader;
import android.content.Loader;
import android.database.Cursor;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.TextView;
public class RightFragment extends ListFragment implements LoaderCallbacks<Cursor>{
private LoaderManager manager;
private MyAdapter adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
manager=getLoaderManager();
adapter=new MyAdapter();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View view=inflater.inflate(R.layout.rightlist, null);
//实例化loader
manager.initLoader(1001, null, this);
//在这里加载 list
// setListAdapter(new MyAdapter());
return view;
}
/**
* 自定义适配器
* @author Administrator
*
*/
public class MyAdapter extends BaseAdapter{
private List<String> list;
public void bindData(List<String > list)
{
this.list=list;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return list.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return list.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
TextView textview=null;
if(convertView==null)
{
textview=new TextView(getActivity());
}else{
textview=(TextView) convertView;
}
textview.setText(list.get(position).toString());
textview.setTextSize(25);
return textview;
}
}
@Override
public void onPause() {
// TODO Auto-generated method stub
super.onPause();
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
// TODO Auto-generated method stub
//uri
CursorLoader loader=new CursorLoader(getActivity(), "content://com.example.....", null, null, null, null);
return loader;
}
@Override
public void onLoadFinished(Loader<Cursor> arg0, Cursor arg1) {
// TODO Auto-generated method stub
List<String> list=new ArrayList<String>();
//如果有下一条
while(arg1.moveToNext())
{
list.add(arg1.getString(arg1.getColumnIndex("name")));
}
//绑定数据
adapter.bindData(list);
//设置适配器
setListAdapter(adapter);
}
@Override
public void onLoaderReset(Loader<Cursor> arg0) {
// TODO Auto-generated method stub
}
}
activity_main.xml 布局文件代码
<LinearLayout 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:orientation="horizontal"
tools:context=".MainActivity" >
<LinearLayout
android:id="@+id/left_main"
android:layout_weight="1"
android:layout_width="0dp"
android:background="#cccccc"
android:layout_height="match_parent"
android:orientation="vertical" >
<EditText
android:id="@+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入姓名"
>
<requestFocus />
</EditText>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="添加" />
</LinearLayout>
<LinearLayout
android:background="#000cf6"
android:id="@+id/right_main"
android:layout_weight="2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical" >
</LinearLayout>
</LinearLayout>
MainActivity.java 代码
package com.example.android_fragment_loadermanager;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class MainActivity extends Activity {
private Button button;
private EditText editText;
private FragmentManager manager;
private FragmentTransaction transaction;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button=(Button)this.findViewById(R.id.button1);
manager=this.getFragmentManager();
transaction=manager.beginTransaction();
RightFragment fragment=new RightFragment();
transaction.add(R.id.right_main, fragment, "right_fragment");
transaction.commit();
editText=(EditText)this.findViewById(R.id.editText1);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String str=editText.getText().toString();
ContentResolver resolver=getContentResolver();
ContentValues values=new ContentValues();
values.put("name", str);
values.put("address", "xxxx");
Uri uri=Uri.parse("content.......");
resolver.insert(uri, values);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}