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>
