android:Intent与组件通信

#Intent与组件通信具体步骤
##效果图

##音乐存放路径

##代码实现
MainActivity.java

package com.qsd;

import java.io.File;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;

import com.qsd.ch5_4.R;

public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.btn_click1).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri data = Uri.parse("http://www.baidu.com");
intent.setData(data);
startActivity(intent);

// Intent intent = new Intent(Intent.ACTION_VIEW);
// intent.setData(Uri.parse("http://www.baidu.com"));
// startActivity(intent);

// Uri uri = Uri.parse("http://www.baidu.com");
// Intent intent = new Intent(Intent.ACTION_VIEW,uri);
// startActivity(intent);
}
});
findViewById(R.id.btn_click2).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:15555215556"));
startActivity(intent);
}
});
findViewById(R.id.btn_click3).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
//Intent intent = new Intent(Intent.ACTION_VIEW);
//intent.setType("vnd.android-dir/mms-sms");
// "sms_body"为固定内容
//intent.putExtra("sms_body", "具体短信内容");
//startActivity(intent);
Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("smsto:18780260012"));
// //"sms_body"为固定内容
intent.putExtra("sms_body", "具体短信内容");
startActivity(intent);
}
});
findViewById(R.id.btn_click4).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
// 获得文件路径，后边是虚拟机存储卡的路径
//Uri data = Uri.fromFile(new File("/mnt/sdcard/libai.mp3"));
Uri data = Uri.fromFile(new File("/mnt/sdcard/tysg.mp3"));
// 设置data+type属性
// 方法：Intent android.content.Intent.setDataAndType(Uri data,
// String type)
intent.setDataAndType(data, "audio/*");
startActivity(intent);
}
});
findViewById(R.id.btn_click5).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_DELETE);
Uri data = Uri.parse("package:com.qsd.ch5_4");
intent.setData(data);
startActivity(intent);
}
});
findViewById(R.id.btn_click6).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_VIEW);
// 路径不能写成："file:///storage/sdcard0/···"
File file = new File("/storage/sdcard/ch5_4.apk");
Uri data = Uri.fromFile(file);
// Type的字符串为固定内容
intent.setDataAndType(data,
"application/vnd.android.package-archive");
startActivity(intent);

}
});

}
}

activity_main.xml

<?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" >

<Button
android:id="@+id/btn_click1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:gravity="center"
android:padding="8dp"
android:text="@string/click1" />

<Button
android:id="@+id/btn_click2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:gravity="center"
android:padding="8dp"
android:text="@string/click2" />

<Button
android:id="@+id/btn_click3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:gravity="center"
android:padding="8dp"
android:text="@string/click3" />

<Button
android:id="@+id/btn_click4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:gravity="center"
android:padding="8dp"
android:text="@string/click4" />

<Button
android:id="@+id/btn_click5"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:gravity="center"
android:padding="8dp"
android:text="@string/click5" />

<Button
android:id="@+id/btn_click6"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:gravity="center"
android:padding="8dp"
android:text="@string/click6" />

</LinearLayout>

##注意：
音乐导入
window>>show view>>File explorer