Android Studio Intent隐式启动，发短信，拨号，打电话，访问网页等实例代码

<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"  android:paddingBottom="@dimen/activity_vertical_margin"  android:paddingLeft="@dimen/activity_horizontal_margin"  android:paddingRight="@dimen/activity_horizontal_margin"  android:paddingTop="@dimen/activity_vertical_margin"  tools:context=".MainActivity">  <LinearLayout    android:layout_width="0dp"    android:layout_height="wrap_content"    android:layout_weight="1"    android:orientation="vertical">    <Button      android:id="@+id/button1"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:text="隐式启动" />    <Button      android:id="@+id/button2"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:text="发短信" />    <Button      android:id="@+id/button3"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:text="拨号按钮" />    <Button      android:id="@+id/button4"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:text="电话按钮" />  </LinearLayout>  <LinearLayout    android:layout_width="0dp"    android:layout_height="wrap_content"    android:layout_weight="2">    <Button      android:id="@+id/button5"      android:layout_width="match_parent"      android:layout_height="192dp"      android:text="打开百度网页"      />  </LinearLayout></LinearLayout>

<?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">  <EditText    android:id="@+id/editText1"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:text="这是第二个界面"/></LinearLayout>

package com.example.administrator.chang;import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.view.View;import android.widget.Button;public class MainActivity extends Activity {  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    Button button1= (Button) findViewById(R.id.button1);    button1.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {        Intent intent =new Intent("com.example.administrator.chang.ACTION_START");        startActivity(intent);      }    });    //发短信    Button button2= (Button) findViewById(R.id.button2);    button2.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {        Intent intent = new Intent();        intent.setAction(Intent.ACTION_SENDTO);        intent.setData(Uri.parse("smsto:10086"));        intent.putExtra("sms_body","The SMS text");        startActivity(intent);      }    });    // 拨号    Button button3= (Button) findViewById(R.id.button3);    button3.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {        Intent intent =new Intent();        intent.setAction(Intent.ACTION_DIAL);        intent.setData(Uri.parse("tel:10086"));        startActivity(intent);      }    });    //打电话    Button button4= (Button) findViewById(R.id.button4);    button4.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {        Intent intent=new Intent();        intent.setAction(Intent.ACTION_CALL);        intent.setData(Uri.parse("tel:10086"));        startActivity(intent);      }    });    Button button5= (Button) findViewById(R.id.button5);    button5.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {        Intent intent=new Intent();        intent.setAction(Intent.ACTION_VIEW);        intent.setData(Uri.parse("http://www.baidu.com"));        startActivity(intent);      }    });  }}

package com.example.administrator.chang;import android.app.Activity;import android.os.Bundle;/** * Created by Administrator on 2015/8/19. */public class SecondActivity extends Activity {  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.firstlayout);  }}

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"  package="com.example.administrator.chang">  <uses-permission android:name="android.permission.CALL_PHONE" />  <application    android:allowBackup="true"    android:icon="@mipmap/ic_launcher"    android:label="@string/app_name"    android:theme="@style/AppTheme">    <activity      android:name=".MainActivity"      android:label="@string/app_name">      <intent-filter>        <action android:name="android.intent.action.MAIN" />        <category android:name="android.intent.category.LAUNCHER" />      </intent-filter>    </activity>    <activity android:name=".SecondActivity">      <intent-filter>        <action android:name="com.example.administrator.chang.ACTION_START" />        <category android:name="android.intent.category.DEFAULT" />      </intent-filter>    </activity>  </application></manifest>

<uses-permission android:name="android.permission.CALL_PHONE" />发短信按钮我用的是intent.setAction(Intent.ACTION_SENDTO);如过短信直接能发送出去需要添加用户权限android.permission.SEND_SMS

<categoryandroid:name="android.intent.category.LAUNCHER" /> <category android:name="ANDROID.INTENT.CATEGORY.LAUNCHER" />