【黑马Android】(07)多线程下载的原理/开源项目xutils/显示意图/隐式意图/人品计算器/开启activity获取返回值

意图/隐式意图/人品计算器/开启activity获取返回值"/>

【黑马Android】(07)多线程下载的原理/开源项目xutils/显示意图/隐式意图/人品计算器/开启activity获取返回值

多线程下载的原理

司马光砸缸，多开几个小水管，抢救小朋友。

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.RandomAccessFile;
import java.HttpURLConnection;
import java.URL;public class MutileThreadDownload {/*** 线程的数量*/private static int threadCount = 3;/*** 每个下载区块的大小*/private static long blocksize;/*** 正在运行的线程的数量*/private static int runningThreadCount;/*** @param args* @throws Exception*/public static void main(String[] args) throws Exception {// 服务器文件的路径String path = "http://192.168.1.100:8080/ff.exe";URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(5000);int code = conn.getResponseCode();if (code == 200) {long size = conn.getContentLength();// 得到服务端返回的文件的大小System.out.println("服务器文件的大小：" + size);blocksize = size / threadCount;// 1.首先在本地创建一个大小跟服务器一模一样的空白文件。File file = new File("temp.exe");RandomAccessFile raf = new RandomAccessFile(file, "rw");raf.setLength(size);// 2.开启若干个子线程分别去下载对应的资源。runningThreadCount = threadCount;for (int i = 1; i <= threadCount; i++) {long startIndex = (i - 1) * blocksize;long endIndex = i * blocksize - 1;if (i == threadCount) {// 最后一个线程endIndex = size - 1;}System.out.println("开启线程：" + i + "下载的位置：" + startIndex + "~"+ endIndex);new DownloadThread(path, i, startIndex, endIndex).start();}}conn.disconnect();}private static class DownloadThread extends Thread {private int threadId;private long startIndex;private long endIndex;private String path;public DownloadThread(String path, int threadId, long startIndex,long endIndex) {this.path = path;this.threadId = threadId;this.startIndex = startIndex;this.endIndex = endIndex;}@Overridepublic void run() {try {// 当前线程下载的总大小int total = 0;File positionFile = new File(threadId + ".txt");URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");// 接着从上一次的位置继续下载数据if (positionFile.exists() && positionFile.length() > 0) {// 判断是否有记录FileInputStream fis = new FileInputStream(positionFile);BufferedReader br = new BufferedReader(new InputStreamReader(fis));// 获取当前线程上次下载的总大小是多少String lasttotalstr = br.readLine();int lastTotal = Integer.valueOf(lasttotalstr);System.out.println("上次线程" + threadId + "下载的总大小："+ lastTotal);startIndex += lastTotal;total += lastTotal;// 加上上次下载的总大小。fis.close();}conn.setRequestProperty("Range", "bytes=" + startIndex + "-"+ endIndex);conn.setConnectTimeout(5000);int code = conn.getResponseCode();System.out.println("code=" + code);InputStream is = conn.getInputStream();File file = new File("temp.exe");RandomAccessFile raf = new RandomAccessFile(file, "rw");// 指定文件开始写的位置。raf.seek(startIndex);System.out.println("第" + threadId + "个线程：写文件的开始位置："+ String.valueOf(startIndex));int len = 0;byte[] buffer = new byte[512];while ((len = is.read(buffer)) != -1) {RandomAccessFile rf = new RandomAccessFile(positionFile,"rwd");raf.write(buffer, 0, len);total += len;rf.write(String.valueOf(total).getBytes());rf.close();}is.close();raf.close();} catch (Exception e) {e.printStackTrace();} finally {// 只有所有的线程都下载完毕后 才可以删除记录文件。synchronized (MutileThreadDownload.class) {System.out.println("线程" + threadId + "下载完毕了");runningThreadCount--;if (runningThreadCount < 1) {System.out.println("所有的线程都工作完毕了。删除临时记录的文件");for (int i = 1; i <= threadCount; i++) {File f = new File(i + ".txt");System.out.println(f.delete());}}}}}}
}

多线程断点下载的原理

同上

多线程断点下载的移植

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=""package="com.itheima.mutilethread"android:versionCode="1"android:versionName="1.0" ><uses-sdkandroid:minSdkVersion="8"android:targetSdkVersion="17" /><uses-permission android:name="android.permission.INTERNET"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><applicationandroid:allowBackup="true"android:icon="@drawable/ic_launcher"android:label="@string/app_name"android:theme="@style/AppTheme" ><activityandroid:name="com.itheima.mutilethread.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></application></manifest>

<LinearLayout xmlns:android=""xmlns:tools=""android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:text="请输入下载文件的路径" /><EditTextandroid:id="@+id/et_path"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="http://192.168.101.138:2222/zuihou.mp3" /><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:text="请输入线程的数量" /><EditTextandroid:id="@+id/et_count"android:layout_width="fill_parent"android:layout_height="wrap_content"android:inputType="number"android:text="3" /><Buttonandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:onClick="downLoad"android:text="下载" /><LinearLayoutandroid:id="@+id/ll_container"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent" ></LinearLayout></LinearLayout>

pb.xml

<?xml version="1.0" encoding="utf-8"?>
<ProgressBar xmlns:android=""android:id="@+id/progressBar1"style="?android:attr/progressBarStyleHorizontal"android:layout_width="fill_parent"android:layout_height="wrap_content" />

package com.itheima.mutilethread;import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.RandomAccessFile;
import java.HttpURLConnection;
import java.URL;
import java.util.ArrayList;
import java.util.List;import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.text.TextUtils;
import android.view.View;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.Toast;public class MainActivity extends Activity {protected static final int DOWNLOAD_ERROR = 1;private static final int THREAD_ERROR = 2;public static final int DWONLOAD_FINISH = 3;private EditText et_path;private EditText et_count;/*** 存放进度条的布局*/private LinearLayout ll_container;/*** 进度条的集合*/private List<ProgressBar> pbs;/*** android下的消息处理器，在主线程创建，才可以更新ui*/private Handler handler = new Handler(){public void handleMessage(Message msg) {switch (msg.what) {case DOWNLOAD_ERROR:Toast.makeText(getApplicationContext(), "下载失败", 0).show();break;case THREAD_ERROR:Toast.makeText(getApplicationContext(), "下载失败,请重试", 0).show();break;case DWONLOAD_FINISH:Toast.makeText(getApplicationContext(), "下载完成", 0).show();break;}};};/*** 线程的数量*/private int threadCount = 3;/*** 每个下载区块的大小*/private long blocksize;/*** 正在运行的线程的数量*/private  int runningThreadCount;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);et_path = (EditText) findViewById(R.id.et_path);et_count = (EditText) findViewById(R.id.et_count);ll_container = (LinearLayout) findViewById(R.id.ll_container);}/*** 下载按钮的点击事件* @param view*/public void downLoad(View view){//下载文件的路径final String path = et_path.getText().toString().trim();if(TextUtils.isEmpty(path)){Toast.makeText(this, "对不起下载路径不能为空", 0).show();return;}String count = et_count.getText().toString().trim();if(TextUtils.isEmpty(path)){Toast.makeText(this, "对不起,线程数量不能为空", 0).show();return;}threadCount = Integer.parseInt(count);//清空掉旧的进度条ll_container.removeAllViews();//在界面里面添加count个进度条pbs = new ArrayList<ProgressBar>();for(int j=0;j<threadCount;j++){ProgressBar pb = (ProgressBar) View.inflate(this, R.layout.pb, null);ll_container.addView(pb);pbs.add(pb);}Toast.makeText(this, "开始下载", 0).show();new Thread(){public void run() {try {URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(5000);int code = conn.getResponseCode();if (code == 200) {long size = conn.getContentLength();// 得到服务端返回的文件的大小System.out.println("服务器文件的大小：" + size);blocksize = size / threadCount;// 1.首先在本地创建一个大小跟服务器一模一样的空白文件。File file = new File(Environment.getExternalStorageDirectory(),getFileName(path));RandomAccessFile raf = new RandomAccessFile(file, "rw");raf.setLength(size);// 2.开启若干个子线程分别去下载对应的资源。runningThreadCount = threadCount;for (int i = 1; i <= threadCount; i++) {long startIndex = (i - 1) * blocksize;long endIndex = i * blocksize - 1;if (i == threadCount) {// 最后一个线程endIndex = size - 1;}System.out.println("开启线程：" + i + "下载的位置：" + startIndex + "~"+ endIndex);int threadSize = (int) (endIndex - startIndex);pbs.get(i-1).setMax(threadSize);new DownloadThread(path, i, startIndex, endIndex).start();}}conn.disconnect();} catch (Exception e) {e.printStackTrace();Message msg = Message.obtain();msg.what = DOWNLOAD_ERROR;handler.sendMessage(msg);}};}.start();}private class DownloadThread extends Thread {private int threadId;private long startIndex;private long endIndex;private String path;public DownloadThread(String path, int threadId, long startIndex,long endIndex) {this.path = path;this.threadId = threadId;this.startIndex = startIndex;this.endIndex = endIndex;}@Overridepublic void run() {try {// 当前线程下载的总大小int total = 0;File positionFile = new File(Environment.getExternalStorageDirectory(),getFileName(path)+threadId + ".txt");URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");// 接着从上一次的位置继续下载数据if (positionFile.exists() && positionFile.length() > 0) {// 判断是否有记录FileInputStream fis = new FileInputStream(positionFile);BufferedReader br = new BufferedReader(new InputStreamReader(fis));// 获取当前线程上次下载的总大小是多少String lasttotalstr = br.readLine();int lastTotal = Integer.valueOf(lasttotalstr);System.out.println("上次线程" + threadId + "下载的总大小："+ lastTotal);startIndex += lastTotal;total += lastTotal;// 加上上次下载的总大小。fis.close();//存数据库。//_id path threadid total}conn.setRequestProperty("Range", "bytes=" + startIndex + "-"+ endIndex);conn.setConnectTimeout(5000);int code = conn.getResponseCode();System.out.println("code=" + code);InputStream is = conn.getInputStream();File file = new File(Environment.getExternalStorageDirectory(),getFileName(path));RandomAccessFile raf = new RandomAccessFile(file, "rw");// 指定文件开始写的位置。raf.seek(startIndex);System.out.println("第" + threadId + "个线程：写文件的开始位置："+ String.valueOf(startIndex));int len = 0;byte[] buffer = new byte[1024];while ((len = is.read(buffer)) != -1) {RandomAccessFile rf = new RandomAccessFile(positionFile,"rwd");raf.write(buffer, 0, len);total += len;rf.write(String.valueOf(total).getBytes());rf.close();pbs.get(threadId-1).setProgress(total);}is.close();raf.close();} catch (Exception e) {e.printStackTrace();Message msg = Message.obtain();msg.what = THREAD_ERROR;handler.sendMessage(msg);} finally {// 只有所有的线程都下载完毕后 才可以删除记录文件。synchronized (MainActivity.class) {System.out.println("线程" + threadId + "下载完毕了");runningThreadCount--;if (runningThreadCount < 1) {System.out.println("所有的线程都工作完毕了。删除临时记录的文件");for (int i = 1; i <= threadCount; i++) {File f = new File(Environment.getExternalStorageDirectory(),getFileName(path)+ i + ".txt");System.out.println(f.delete());}Message msg = Message.obtain();msg.what = DWONLOAD_FINISH;handler.sendMessage(msg);}}}}}//http://192.168.1.100:8080/aa.exeprivate String getFileName(String path){int start = path.lastIndexOf("/")+1;return path.substring(start);}}

开源项目xutils

xUtils-master.zip

<LinearLayout xmlns:android=""xmlns:tools=""android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><EditTextandroid:id="@+id/et_path"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="http://192.168.101.138:2222/zuihou.mp3" /><Buttonandroid:onClick="download"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="下载" /><TextViewandroid:id="@+id/tv_info"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="TextView" /></LinearLayout>

xUtils-2.4.7.jar

package com.itheima.download2;import java.io.File;import android.app.Activity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.HttpHandler;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;public class MainActivity extends Activity {private EditText et_path;private TextView tv_info;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);et_path = (EditText) findViewById(R.id.et_path);tv_info = (TextView) findViewById(R.id.tv_info);}public void download(View view) {String path = et_path.getText().toString().trim();if (TextUtils.isEmpty(path)) {Toast.makeText(this, "请输入下载的路径", 0).show();return;} else {HttpUtils http = new HttpUtils();HttpHandler handler = http.download(path, "/sdcard/abc.mp3", true, // 如果目标文件存在，接着未完成的部分继续下载。服务器不支持RANGE时将从新下载。true, // 如果从请求返回信息中获取到文件名，下载完成后自动重命名。new RequestCallBack<File>() {@Overridepublic void onStart() {tv_info.setText("conn...");}@Overridepublic void onLoading(long total, long current,boolean isUploading) {tv_info.setText(current + "/" + total);}@Overridepublic void onSuccess(ResponseInfo<File> responseInfo) {tv_info.setText("downloaded:"+ responseInfo.result.getPath());}@Overridepublic void onFailure(HttpException error, String msg) {tv_info.setText(msg);}});}}
}

显示意图

人品计算器的案例

隐式意图

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=""package="com.itheima.intent2"android:versionCode="1"android:versionName="1.0" ><uses-sdkandroid:minSdkVersion="8"android:targetSdkVersion="17" /><applicationandroid:allowBackup="true"android:icon="@drawable/ic_launcher"android:label="@string/app_name"android:theme="@style/AppTheme" ><activityandroid:name="com.itheima.intent2.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="com.itheima.intent2.SecondActivity" ><intent-filter><action android:name="com.itheima.intent2.open2" /><category android:name="android.intent.category.DEFAULT" /><data android:mimeType="application/person" /><data android:scheme="jianren" /></intent-filter></activity></application></manifest>

<RelativeLayout xmlns:android=""xmlns:tools=""android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity" ><Buttonandroid:onClick="click"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_centerVertical="true"android:text="隐式意图激活界面" /></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android=""android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/textView1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="我是第二个界面"android:textAppearance="?android:attr/textAppearanceLarge" /></LinearLayout>

package com.itheima.intent2;import android.app.Activity;
import android.content.Intent;
import android.Uri;
import android.os.Bundle;
import android.view.View;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}public void click(View view) {// 打 action// 人 数据// 附件的数据 Category 类别Intent intent = new Intent();intent.setAction("com.itheima.intent2.open2");intent.addCategory(Intent.CATEGORY_DEFAULT);// URL:统一资源定位符 http https ftp rtsp: URI：统一资源标识符 url是uri的一个子集// intent.setData(Uri.parse("jianren:张三"));// intent.setType("application/person");intent.setDataAndType(Uri.parse("jianren:张三"), "application/person");startActivity(intent);}
}

package com.itheima.intent2;import android.app.Activity;
import android.os.Bundle;public class SecondActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_second);}
}

打开浏览器

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=""package="com.itheima.openbrowser"android:versionCode="1"android:versionName="1.0" ><uses-sdkandroid:minSdkVersion="8"android:targetSdkVersion="17" /><applicationandroid:allowBackup="true"android:icon="@drawable/ic_launcher"android:label="@string/app_name"android:theme="@style/AppTheme" ><activityandroid:name="com.itheima.openbrowser.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></application></manifest>

<RelativeLayout xmlns:android=""xmlns:tools=""android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity" ><Buttonandroid:onClick="click"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_centerVertical="true"android:text="打开百度" /></RelativeLayout>

package com.itheima.openbrowser;import android.app.Activity;
import android.content.Intent;
import android.Uri;
import android.os.Bundle;
import android.view.View;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}public void click(View view){
//        <action android:name="android.intent.action.VIEW" />
//        <category android:name="android.intent.category.DEFAULT" />
//        <category android:name="android.intent.category.BROWSABLE" />
//        <data android:scheme="http" />
//        <data android:scheme="https" />
//        <data android:scheme="about" />
//        <data android:scheme="javascript" />Intent intent = new Intent();intent.setAction("android.intent.action.VIEW");intent.addCategory("android.intent.category.DEFAULT");intent.addCategory("android.intent.category.BROWSABLE");intent.setData(Uri.parse(""));startActivity(intent);}}

人品计算器

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=""package="com.itheima.rpcalc"android:versionCode="1"android:versionName="1.0" ><uses-sdkandroid:minSdkVersion="8"android:targetSdkVersion="17" /><applicationandroid:allowBackup="true"android:icon="@drawable/ic_launcher"android:label="@string/app_name"android:theme="@style/AppTheme" ><activityandroid:name="com.itheima.rpcalc.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><activityandroid:name="com.itheima.rpcalc.CalcActivity"android:label="@string/title_activity_calc" ></activity></application></manifest>

<RelativeLayout xmlns:android=""xmlns:tools=""android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity" ><Buttonandroid:id="@+id/bt_calc"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_centerVertical="true"android:onClick="enter"android:text="点击进入人品计算器" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:src="@drawable/rp" /><EditTextandroid:id="@+id/et_name"android:layout_centerHorizontal="true"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_above="@+id/bt_calc"android:hint="请输入要计算的姓名" /></RelativeLayout>

<RelativeLayout xmlns:android=""xmlns:tools=""android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".CalcActivity" ><TextViewandroid:id="@+id/tv_result"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_centerVertical="true"android:text="我是计算器页面" /></RelativeLayout>

package com.itheima.rpcalc;import java.util.Random;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;public class CalcActivity extends Activity {private TextView tv_result;//当activity被创建的时候调用的方法@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_calc);tv_result = (TextView) findViewById(R.id.tv_result);Intent intent = getIntent();String name = intent.getStringExtra("name");byte[] result = name.getBytes();int number = 0;for(byte b :result){number += b&0xff;}int sorce = Math.abs(number)%100;tv_result.setText(name+"的人品："+sorce);}
}

package com.itheima.rpcalc;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;public class MainActivity extends Activity {private EditText et_name;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);et_name = (EditText) findViewById(R.id.et_name);}//显式意图  ：必须指定要激活的组件的完整包名和类名 （应用程序之间耦合在一起）// 一般激活自己应用的组件的时候 采用显示意图//隐式意图： 只需要指定要动作和数据就可以 （ 好处应用程序之间没有耦合）//激活别人写的应用  隐式意图， 不需要关心对方的包名和类名public void enter(View view){String name = et_name.getText().toString().trim();if(TextUtils.isEmpty(name)){Toast.makeText(this, "请输入姓名", 0).show();return;}//意图     开电视  打人  打酱油Intent intent = new Intent(this, CalcActivity.class);intent.putExtra("name", name);//显式意图//intent.setClassName(getPackageName(), "com.itheima.rpcalc.CalcActivity");//不指定动作，也不指定数据 直接指定要激活的组件startActivity(intent);//隐式意图//intent.setAction(action);//intent.setData(data);}
}

开启activity获取返回值

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=""package="com.itheima.smshelper"android:versionCode="1"android:versionName="1.0" ><uses-sdkandroid:minSdkVersion="8"android:targetSdkVersion="17" /><uses-permission android:name="android.permission.SEND_SMS"/><applicationandroid:allowBackup="true"android:icon="@drawable/ic_launcher"android:label="@string/app_name"android:theme="@style/AppTheme" ><activityandroid:name="com.itheima.smshelper.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="com.itheima.smshelper.ListSmsActivity" ></activity><activity android:name="com.itheima.smshelper.ListNumberActivity" ></activity></application></manifest>

sms_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android=""android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical" ><TextViewandroid:id="@+id/tv_info"android:layout_width="match_parent"android:layout_height="wrap_content"android:drawableLeft="@android:drawable/star_big_on"android:gravity="center_vertical"android:text="我爱你。" /></LinearLayout>

activity_sms.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android=""android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><ListViewandroid:id="@+id/lv"android:layout_width="match_parent"android:layout_height="match_parent" ></ListView></LinearLayout>

activity_main.xml

<LinearLayout xmlns:android=""xmlns:tools=""android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><EditTextandroid:id="@+id/et_number"android:layout_width="fill_parent"android:layout_height="wrap_content"android:hint="请输入电话号码" /><EditTextandroid:id="@+id/et_content"android:layout_width="fill_parent"android:layout_height="wrap_content"android:hint="请输入短信的内容"android:inputType="textMultiLine"android:lines="5" /><Buttonandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:onClick="selectSms"android:text="选择短信" /><Buttonandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:onClick="selectNumber"android:text="选择电话号码" /><Buttonandroid:onClick="sendSms"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="发送短信" /></LinearLayout>

package com.itheima.smshelper;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;public class ListNumberActivity extends Activity {private ListView lv;private String[] objects = {"1234","34324","5643543","32424" };@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_sms);lv = (ListView) findViewById(R.id.lv);lv.setAdapter(new ArrayAdapter<String>(this, R.layout.sms_item,R.id.tv_info, objects));lv.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {String smsinfo = objects[position];Intent data = new Intent();data.putExtra("smsinfo", smsinfo);//设置数据。setResult(1, data);//关闭掉当前的activity，并且回传数据 onActivityResult().finish();}});}
}

package com.itheima.smshelper;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;public class ListSmsActivity extends Activity {private ListView lv;private String[] objects = {"玫瑰香香，情人黏黏，情话甜甜，情歌绵绵；花灯灿灿，礼花点点，好运连连，好梦圆圆。情人节喜逢元宵节，喜鹊登枝蝴蝶成双鸳鸯成对双喜临门祝双节快乐，合家团团圆圆，甜甜蜜蜜，开开心心，幸幸福福","情人节快到了，我精心挑选玫瑰花、百合花和满天星，扎成一束鲜花随短信送给你，火红的玫瑰代表热烈奔放，洁白的百合代表百年好合，小小的满天星代表幸福美好。愿你的情人节热烈奔放，你们的爱情百年好合，你们的生活幸福美满。预祝情人节快乐","^o^满天星光，最爱你许过愿望的那一颗，鲜花绽放，最爱你摘下微笑的那一朵，曼妙旋律，最爱你感动落泪的那一段，亲爱的，情人节快乐，爱你。 ","^o^宝贝，情人节到了，送你一束玫瑰，用真心塑料纸包扎，系上快乐彩带，喷点爱的香水，插一张真情卡片，写着：宝贝，愿我的爱能带给你一生的快乐！" };@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_sms);lv = (ListView) findViewById(R.id.lv);lv.setAdapter(new ArrayAdapter<String>(this, R.layout.sms_item,R.id.tv_info, objects));lv.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {String smsinfo = objects[position];Intent data = new Intent();data.putExtra("smsinfo", smsinfo);//设置数据。setResult(0, data);//关闭掉当前的activity，并且回传数据 onActivityResult().finish();}});}
}

package com.itheima.smshelper;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;public class MainActivity extends Activity {private EditText et_content;private EditText et_number;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);et_content = (EditText) findViewById(R.id.et_content);et_number = (EditText) findViewById(R.id.et_number);}public void selectSms(View view) {Intent intent = new Intent(this, ListSmsActivity.class);// 开启一个新的界面，并且获取界面的返回值// startActivity(intent);// int requestCode 请求码startActivityForResult(intent, 0);}public void selectNumber(View view) {Intent intent = new Intent(this, ListNumberActivity.class);// 开启一个新的界面，并且获取界面的返回值// startActivity(intent);// int requestCode 请求码startActivityForResult(intent, 1);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {if (data != null) {String smsinfo = data.getStringExtra("smsinfo");if (resultCode == 0) {et_content.setText(smsinfo);} else if (resultCode == 1) {et_number.setText(smsinfo);}}super.onActivityResult(requestCode, resultCode, data);}public void sendSms(View view){String content = et_content.getText().toString().trim();String number = et_number.getText().toString().trim();SmsManager.getDefault().sendTextMessage(number, null, content, null, null);Toast.makeText(this, "发送成功", 0).show();}
}