23 服务的启动Demo2

时间：2022-07-24 19:02:29

23 服务的启动Demo2

MainActivity.java

package com.qf.day23_service_demo2;

import android.app.Activity;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.TextView;

public class MainActivity extends Activity {

    private String iamgUrl = "https://ss2.baidu.com/6ONYsjip0QIZ8tyhnq/it/u=2507878052,3446525205&fm=58";

    private TextView tv;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

         tv = (TextView) findViewById(R.id.tv);

        BroadcastReceiver broadcastReceiver = new BroadcastReceiver(){

            @Override

            public void onReceive(Context context, Intent intent) {

                tv.setText("去死吧");

                Log.e("fmy", "嘿嘿");

            }

        };

        IntentFilter intentFilter = new IntentFilter();

        intentFilter.addAction("fmy.fmy.fmy");

        registerReceiver(broadcastReceiver, intentFilter);

    }

    //点击按钮  开启服务下载数据

    public void MyLoadClick(View v){

        Intent intent = new Intent();

        intent.setAction("com.qf.day23_service_demo2.MyLoaderService");

        intent.putExtra("imagUrl", iamgUrl);

        //API 23以上需要加上 不然报错

//      intent.setPackage(getPackageName());

        startService(intent);

    }

    //点击按钮  停止服务

    public void StopServiceClick(View v){

        Intent intent = new Intent();

        intent.setAction("com.qf.day23_service_demo2.MyLoaderService");

        stopService(intent);

    }

}

MyLoaderService.java

package com.qf.day23_service_demo2;

import com.qf.day23_service_demo2.utils.FileUtils;

import com.qf.day23_service_demo2.utils.HttpUtils;

import android.app.NotificationManager;

import android.app.PendingIntent;

import android.app.Service;

import android.content.Context;

import android.content.Intent;

import android.os.IBinder;

import android.support.v4.app.NotificationCompat;

import android.util.Log;

public class MyLoaderService extends Service{

    String imagUrl ="";

    @Override

    public IBinder onBind(Intent intent) {

        // TODO Auto-generated method stub

        return null;

    }

    @Override

    public int onStartCommand(Intent intent, int flags, int startId) {

        imagUrl = intent.getStringExtra("imagUrl");

        //开启下载

        new Thread(){

            public void run() {

                //判断网络状态

                if(HttpUtils.isNetWork(MyLoaderService.this)){

                    //开始下载

                    byte[] buffer = HttpUtils.getData(imagUrl);

                    //保存在SD卡

                    if(FileUtils.isConnSdCard()){

                        //保存到 Sd卡

                        boolean flag  = FileUtils.writeToSdcard(buffer, imagUrl);

                        if(flag){

                            Log.e("AAA", "下载完成");

                            //发送广播

                            sendNotification();

                            Intent intent2 = new Intent("fmy.fmy.fmy");

                            sendBroadcast(intent2);

                            //服务自己关闭服务

                            stopSelf();

                        }

                    }else{

                        Log.e("AAA", "Sd卡不可用");

                    }

                }else{

                    Log.e("AAA", "网络异常");

                }

            };

        }.start();

        return super.onStartCommand(intent, flags, startId);

    }

    //发送广播

    public void sendNotification(){

        //要传递的图片名称

        imagUrl = imagUrl.substring(imagUrl.lastIndexOf("/")+1);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext());

        builder.setContentTitle("下载美女图");

        builder.setContentText("景甜");

        builder.setSmallIcon(R.drawable.ic_launcher);

        Intent intent = new Intent(MyLoaderService.this, SecondActivity.class);

        intent.putExtra("imagUrl", imagUrl);

        PendingIntent pendingIntent = PendingIntent.

                getActivity(getApplicationContext(), 100, intent, PendingIntent.FLAG_ONE_SHOT);

        builder.setContentIntent(pendingIntent);

        NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        manager.notify(1, builder.build());

    }

}

SecondActivity.java

package com.qf.day23_service_demo2;

import java.io.File;

import android.app.Activity;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.os.Bundle;

import android.os.Environment;

import android.widget.ImageView;

public class SecondActivity extends Activity {

    private ImageView iv;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        setContentView(R.layout.layout);

        iv = (ImageView) findViewById(R.id.iv);

        String imagUrl = getIntent().getStringExtra("imagUrl");

        File file = new File(Environment.

                getExternalStoragePublicDirectory(

                        Environment.DIRECTORY_DOWNLOADS), imagUrl);

        String pathName = file.getAbsolutePath();

        Bitmap bp = BitmapFactory.decodeFile(pathName);

        iv.setImageBitmap(bp);

    }

}

FileUtils.java

package com.qf.day23_service_demo2.utils;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import android.os.Environment;

public class FileUtils {

    /**

     * 判断sdCard是否挂载

     * @return

     */

    public static boolean isConnSdCard(){

        if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){

            return true;

        }

        return false;

    }

    /**

     * 将图片的字节数组保存到  sd卡上

     * @return

     */

    public static boolean writeToSdcard(byte[] buffer ,String imagName){

        FileOutputStream outputStream =null;

        boolean flag = false;

        String fileName = imagName.substring(imagName.lastIndexOf("/")+1);

        File file = new File(Environment.

                getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS),

                fileName);

        try {

            outputStream = new FileOutputStream(file);

            outputStream.write(buffer);

            flag = true;

        } catch (FileNotFoundException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }finally{

            if(outputStream!=null){

                try {

                    outputStream.close();

                } catch (IOException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

            }

        }

        return flag;

    }

}

HttpUtils.java

package com.qf.day23_service_demo2.utils;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.InputStream;

import org.apache.http.HttpResponse;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.DefaultHttpClient;

import android.content.Context;

import android.net.ConnectivityManager;

import android.net.NetworkInfo;

public class HttpUtils {

    /**

     * 判断是否有网络

     * @param context

     * @return

     */

    public static boolean isNetWork(Context context){

        //得到网络的管理者

        ConnectivityManager manager = (ConnectivityManager)

                context.getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo info = manager.getActiveNetworkInfo();

        if(info!=null){

            return true;

        }else{

            return false;

        }

    }

    /**

     * 获取数据

     * @param path

     * @return

     */

    public static byte[] getData(String path) {

        HttpClient httpClient = new DefaultHttpClient();

        HttpGet httpGet = new HttpGet(path);

        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

        try {

            HttpResponse response = httpClient.execute(httpGet);

            if (response.getStatusLine().getStatusCode() == 200) {

                InputStream inputStream = response.getEntity().getContent();

                byte[] buffer = new byte[1024];

                int temp = 0;

                while ((temp = inputStream.read(buffer)) != -1) {

                    outputStream.write(buffer, 0, temp);

                    outputStream.flush();

                }

            }

            return outputStream.toByteArray();

        } catch (ClientProtocolException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        return null;

    }

}

AndroidManifest.xml

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

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.qf.day23_service_demo2"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="18" />

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

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

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

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

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.qf.day23_service_demo2.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"></activity>

        <service android:name="com.qf.day23_service_demo2.MyLoaderService">

            <intent-filter >

                <action android:name="com.qf.day23_service_demo2.MyLoaderService"/>

            </intent-filter>

        </service>

    </application>

</manifest>

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