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.
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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 @Override17 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 @Override24 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 @Override34 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 @Override43 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 @Override50 public boolean onOptionsItemSelected(MenuItem item) {51 // Handle action bar item clicks here. The action bar will52 // automatically handle clicks on the Home/Up button, so long53 // as you specify a parent activity in AndroidManifest.54 int id = item.getItemId();55 56 //noinspection SimplifiableIfStatement57 if (id == R.id.action_settings) {58 return true;59 }60 61 return super.onOptionsItemSelected(item);62 }63 }
MainActivity.java
1 <??> 2 <manifest ="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 <activity11 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.
1 <LinearLayout ="http://schemas.android.com/apk/res/android" 2 ="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 <Button12 android:layout_width="fill_parent"13 android:layout_height="wrap_content"14 android:id="@+id/btnStartBrowser"15 android:text="@string/start_browser"/>16 <Button17 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.
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>
strings.
原标题:IntentDemo
关键词: