Android Activity提供服务(被调用Activity 给调用Activity 反来数据)

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网上看了小例子、

现在自己整理一下子：

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现在想实现一个

Activity1?? 调用?? Activity2?? 然后 Activity2返回数据给Activity1

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流程:

1、Activity1 启动Activity2? 设置返回码和重写onActivityResult

2、Activity2 完成操作后 返加activity 并传入值

3、Activity1 onActivityResult 里就可以得到Activity2传进来的值。

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例子:选择电话号码并返回例子。

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Activity1

layout? layout_activity_return_test.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:gravity="center"    android:orientation="vertical" >    <TextView        android:id="@+id/showTextViewId"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:onClick="onclick"        android:text="返回数据" /></LinearLayout>

?Activity IntentReturnTest.java

package com.main;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.TextView;public class IntentReturnTest extends Activity {	private TextView text;	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.layout_activity_return_test);				text = (TextView) findViewById(R.id.showTextViewId);	}		public void onclick(View view){		Intent intent = new Intent();        intent.setClass(IntentReturnTest.this, GetContentResolverActivity.class);        startActivityForResult(intent, 1);//返回时提供识别 	}			protected void onActivityResult(int requestCode, int resultCode, Intent data) {		super.onActivityResult(requestCode, resultCode, data);		switch(requestCode){		case 1:			text.setText("---|"+data.getStringExtra("msg")+"---|");			break;		}									}}

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Activity2

layout?? layout_get_content_resolver.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <ListView        android:id="@+id/showContentListView"        android:layout_height="wrap_content"        android:layout_width="fill_parent" >    </ListView></LinearLayout>

Activity2 类

package com.main;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.content.Intent;import android.database.Cursor;import android.os.Bundle;import android.provider.Contacts;import android.util.Log;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ArrayAdapter;import android.widget.ListView;public class GetContentResolverActivity extends Activity {	private List<String> items;	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.layout_get_content_resolver);				ListView listView = (ListView) findViewById(R.id.showContentListView);				items = new ArrayList<String>();		Cursor cursor = getContentResolver().query(Contacts.Phones.CONTENT_URI,null,null,null,null);		while(cursor.moveToNext()){			String name = cursor.getString(cursor.getColumnIndex(Contacts.Phones.NAME));			String number = cursor.getString(cursor.getColumnIndex(Contacts.Phones.NUMBER));			items.add(name+":"+number);		}		cursor.close();				ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1 ,items);		listView.setAdapter(adapter);		listView.setOnItemClickListener(new OnItemClickListener() {			@Override			public void onItemClick(AdapterView<?> parent, View view,					int position, long id) {				Log.i("test", items.get(position));				Intent intent = getIntent();				intent.putExtra("msg", items.get(position));				GetContentResolverActivity.this.setResult(RESULT_OK,intent);				GetContentResolverActivity.this.finish();			}		});	}}

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添加权限

    <!-- 读取联系人权限 -->    <uses-permission android:name="android.permission.READ_CONTACTS" />

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注册Activity

    <application        android:icon="@drawable/image_button"        android:label="@string/app_name" >        <activity            android:label="@string/app_name"            android:name=".IntentReturnTest" >            <intent-filter >                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity android:name=".GetContentResolverActivity" >        </activity>    </application>

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好ok 完成 。

附件 apk

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