IntentDemo

Intent通信示例：

两个Button，一个startBrowser, 一个startPhone.

其中，OnClickListener()是类View的一个interface，需要实现其中的onClick()函数。

startActivity()开启另一个Activity，本示例中开启Browser或Phone.

Intent.ACTION_VIEW向用户display data.

 1 package com.example.shad_fnst.intentdemo;
 2 
 3 import android.app.Activity;
 4 import android.content.Intent;
 5 import android.net.Uri;
 6 import android.support.v7.app.ActionBarActivity;
 7 import android.os.Bundle;
 8 import android.view.Menu;
 9 import android.view.MenuItem;
10 import android.view.View;
11 import android.widget.Button;
12 
13 
14 public class MainActivity extends Activity {
15 
16     @Override
17     protected void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout.activity_main);
20 
21         Button startBrowser = (Button) findViewById(R.id.btnStartBrowser);
22         startBrowser.setOnClickListener(new View.OnClickListener() {
23             @Override
24             public void onClick(View v) {
25                 Intent i = new Intent(Intent.ACTION_VIEW,
26                         Uri.parse("http://www.baidu.com"));
27                 startActivity(i);
28             }
29         });
30 
31         Button startPhone = (Button) findViewById(R.id.btnStartPhone);
32         startPhone.setOnClickListener(new View.OnClickListener() {  //OnClickListener是一个接口
33             @Override
34             public void onClick(View v) {
35                 Intent i =new Intent(Intent.ACTION_VIEW,
36                         Uri.parse("tel:+8613912945369"));
37                 startActivity(i);
38             }
39         });
40     }
41 
42     @Override
43     public boolean onCreateOptionsMenu(Menu menu) {
44         // Inflate the menu; this adds items to the action bar if it is present.
45         getMenuInflater().inflate(R.menu.menu_main, menu);
46         return true;
47     }
48 
49     @Override
50     public boolean onOptionsItemSelected(MenuItem item) {
51         // Handle action bar item clicks here. The action bar will
52         // automatically handle clicks on the Home/Up button, so long
53         // as you specify a parent activity in AndroidManifest.xml.
54         int id = item.getItemId();
55 
56         //noinspection SimplifiableIfStatement
57         if (id == R.id.action_settings) {
58             return true;
59         }
60 
61         return super.onOptionsItemSelected(item);
62     }
63 }

MainActivity.java

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.example.shad_fnst.intentdemo" >
 4 
 5     <application
 6         android:allowBackup="true"
 7         android:icon="@mipmap/ic_launcher"
 8         android:label="@string/app_name"
 9         android:theme="@style/AppTheme" >
10         <activity
11             android:name=".MainActivity"
12             android:label="@string/app_name" >
13             <intent-filter>
14                 <action android:name="android.intent.action.MAIN" />
15 
16                 <category android:name="android.intent.category.LAUNCHER" />
17             </intent-filter>
18         </activity>
19     </application>
20 
21 </manifest>

AndroidMainfest.xml

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:paddingLeft="@dimen/activity_horizontal_margin"
 6     android:paddingRight="@dimen/activity_horizontal_margin"
 7     android:paddingTop="@dimen/activity_vertical_margin"
 8     android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"
 9     android:orientation="vertical">
10 
11     <Button
12         android:layout_width="fill_parent"
13         android:layout_height="wrap_content"
14         android:id="@+id/btnStartBrowser"
15         android:text="@string/start_browser"/>
16     <Button
17         android:layout_width="fill_parent"
18         android:layout_height="wrap_content"
19         android:id="@+id/btnStartPhone"
20         android:text="@string/start_phone"/>
21 
22 </LinearLayout>

activity_main.xml

1 <resources>
2     <string name="app_name">IntentDemo</string>
3 
4     <string name="hello_world">Hello world!</string>
5     <string name="action_settings">Settings</string>
6     <string name="start_browser">Start Browser</string>
7     <string name="start_phone">Start Phone</string>
8 </resources>