android之隐示意图跳转启动另一个activity

主面板布局：layout/activity_main.xml

<LinearLayout xmlns:android="/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<Button

android:id="@+id/btnStartSecondActivity"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="start SecondActivity" />

<Button

android:id="@+id/btnBrowser"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="浏览网页" />

<Button

android:id="@+id/btnCall"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="拨打电话" />

<Button

android:id="@+id/btnDial"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="启动拨号面板" />

<Button

android:id="@+id/btnUninstall"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="卸载应用程序" />

<Button

android:id="@+id/btnInstall"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="安装应用程序" />

<Button

android:id="@+id/btnSendSms"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="发送短信" />

<Button

android:id="@+id/btnPlayMusic"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="播放音乐" />

</LinearLayout>

主面板调用java代码：

package com.sxt.day04_06;

import java.io.File;

import android.app.Activity;

import android.content.Intent;

import .Uri;

import android.os.Bundle;

import android.os.Environment;

import android.view.View;

import android.view.View.OnClickListener;

public class MainActivity extends Activity implements OnClickListener {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

setListener();

}

private void setListener() {

findViewById(R.id.btnBrowser).setOnClickListener(this);

findViewById(R.id.btnCall).setOnClickListener(this);

findViewById(R.id.btnDial).setOnClickListener(this);

findViewById(R.id.btnInstall).setOnClickListener(this);

findViewById(R.id.btnPlayMusic).setOnClickListener(this);

findViewById(R.id.btnSendSms).setOnClickListener(this);

findViewById(R.id.btnStartSecondActivity).setOnClickListener(this);

findViewById(R.id.btnUninstall).setOnClickListener(this);

}

@Override

public void onClick(View v) {

Intent intent = null;

switch (v.getId()) {

case R.id.btnBrowser://浏览网页

intent = new Intent(Intent.ACTION_VIEW);

intent.setData(Uri.parse(""));

break;

case R.id.btnCall://打电话

intent = new Intent(Intent.ACTION_CALL);

intent.setData(Uri.parse("tel:15555215554"));

break;

case R.id.btnDial://启动拨号面板

intent = new Intent(Intent.ACTION_DIAL);

intent.setData(Uri.parse("tel:68337799"));

break;

case R.id.btnInstall: {//找到sdk中的安装文件，然后进行安装

// 找到sd卡的Download目录

File dir = Environment

.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);

File file = new File(dir, "baidu_safe.apk");

intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.fromFile(file),

"application/vnd.android.package-archive");

}

break;

case R.id.btnPlayMusic://播放音乐文件

intent = new Intent(Intent.ACTION_VIEW);

File dir = Environment

.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);

File file = new File(dir, "yielaixiang.mp3");

intent.setDataAndType(Uri.fromFile(file), "audio/mp3");

break;

case R.id.btnSendSms://发送短信

intent=new Intent(Intent.ACTION_SENDTO);

intent.setData(Uri.parse("smsto:13377558899"));

intent.putExtra("sms_body", "hello android!");

break;

case R.id.btnStartSecondActivity://隐示意图跳转到另一个activity

intent=new Intent("com.sxt.day04_06.SecondActivity");

break;

case R.id.btnUninstall://卸载安装好的文件

intent=new Intent(Intent.ACTION_DELETE);

intent.setData(Uri.parse("package:com.sxt.day04_01"));

break;

}

startActivity(intent);

}

次面板布局：layout/activity_second.xml

<RelativeLayout xmlns:android="/apk/res/android"

xmlns:tools="/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

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=".SecondActivity" >

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/hello_world" />

</RelativeLayout>

次面板java代码：

package com.sxt.day04_06;

import android.os.Bundle;

import android.app.Activity;

import android.util.Log;

import android.view.Menu;

public class SecondActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_second);

Log.i("main","SecondActivity.onCreate()");

}

清单xml：AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="/apk/res/android"

package="com.sxt.day04_06"

android:versionCode="1"

android:versionName="1.0" >

<uses-sdk

android:minSdkVersion="8"

android:targetSdkVersion="18" />

<uses-permission android:name="android.permission.CALL_PHONE"/> （这两个是权限的）

<uses-permission android:name="android.permission.INTERNET"/>

<application

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme" >

<activity

android:name="com.sxt.day04_06.MainActivity"

android:label="@string/app_name" >

<intent-filter>

</intent-filter>

</activity>

<activity

android:name="com.sxt.day04_06.SecondActivity"

android:label="@string/title_activity_second" >

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

效果：