apk更新、下载、安装（三）---DownloadManager ui方式【有卡顿bug】

文件下载 点击打开链接下载。。。。。

这个demo有个bug 1、下载时候通知栏很卡 2、如果下载时，没有下载完毕，清掉通知栏，下载在启动报错

由于对这个系统下载类不熟悉，大神看到后，有解决方案的话，留言，多谢了

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    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=".MainActivity" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_marginTop="10dp"
        android:text="@string/download1" />


    <ProgressBar
        android:id="@+id/progress1"
        style="@android:style/Widget.ProgressBar.Horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dip" />

</LinearLayout>

EpaApplication

package com.example.indownloaddemo;

import android.app.Application;

public class EpaApplication extends Application {

    static EpaApplication epp;

    @Override
    public void onCreate() {
        super.onCreate();
        epp = this;
    }

    public static EpaApplication getEpaApplication() {
        return epp;
    }
}

MainActivity

package com.example.indownloaddemo;

import java.io.File;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;

import com.thin.downloadmanager.DownloadManager;
import com.thin.downloadmanager.DownloadRequest;
import com.thin.downloadmanager.DownloadRequest.Priority;
import com.thin.downloadmanager.DownloadStatusListener;
import com.thin.downloadmanager.ThinDownloadManager;
public class MainActivity extends Activity implements OnClickListener {

    private DownloadManager downloadManager;
    //下载的线程数
    private static final int DOWNLOAD_THREAD_POOL_SIZE = 4;

    Button mDownload1;

    ProgressBar mProgress1;

    Context context;

    /**
     * 服务端apk路径  
     */
    private static final String FILE1 = "http://img.meilishuo.net/css/images/AndroidShare/Meilishuo_3.6.1_10006.apk";

    MyDownloadListner myDownloadStatusListener = new MyDownloadListner();

    int downloadId1 = 0;
    private DownloadRequest request1;

    EppNotificationControl notificationControl;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        context = this;
        createSDCardDir("epp.apk");
        initView();
        initDownload();
        notificationControl = new EppNotificationControl(this.urlPath);
    }



    private void initView() {
        mDownload1 = (Button) findViewById(R.id.button1);
        mProgress1 = (ProgressBar) findViewById(R.id.progress1);

        mProgress1.setMax(100);
        mProgress1.setProgress(0);

        downloadManager = new ThinDownloadManager(DOWNLOAD_THREAD_POOL_SIZE);
        mDownload1.setOnClickListener(this);

    }
    private void initDownload() {
        Uri downloadUri = Uri.parse(FILE1);
        Uri destinationUri = Uri.parse(urlPath);
        Log.e("TAG", urlPath);
        request1 = new DownloadRequest(downloadUri)
                .setDestinationURI(destinationUri).setPriority(Priority.HIGH)
                .setDownloadListener(myDownloadStatusListener);

    }
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.button1:
                if (downloadManager.query(downloadId1) == DownloadManager.STATUS_NOT_FOUND) {
                    downloadId1 = downloadManager.add(request1);
                }
                notificationControl.showProgressNotify();
                break;
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        downloadManager.release();
    }

    class MyDownloadListner implements DownloadStatusListener {

        @Override
        public void onDownloadComplete(int id) {
            Log.e("TAG", "download completed");
            if (id == downloadId1) {
            }
        }

        @Override
        public void onDownloadFailed(int id, int errorCode, String errorMessage) {
            Log.e("TAG", "DownloadFailed");
            if (id == downloadId1) {
                mProgress1.setProgress(0);
            }
        }

        @Override
        public void onProgress(int id, long totalBytes, long downloadedBytes,
                int progress) {

            Log.e("TAG", progress + "");
            if (id == downloadId1) {
                mProgress1.setProgress(progress);
                notificationControl.updateNotification(progress);
            }

        }
    }


    String urlPath;

    public String createSDCardDir(String name) {
        if (Environment.MEDIA_MOUNTED.equals(Environment
                .getExternalStorageState())) {
            File sdcardDir = Environment.getExternalStorageDirectory();
            String path = sdcardDir.getPath() + "/MUDOWN";
            File dir = new File(path);
            if (!dir.exists()) {
                dir.mkdirs();
            }
            File file = new File(dir + File.separator + name);
            if (!file.exists()) {
                try {
                    file.createNewFile();
                } catch (Exception e) {
                }
                urlPath = file.getPath();
            }
        }
        return urlPath;
    }
}

EppNotificationControl

package com.example.indownloaddemo;

import java.io.File;

import android.app.Notification;
import android.app.NotificationManager;
import android.content.Intent;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.support.v4.app.NotificationCompat;

public class EppNotificationControl {

    NotificationManager mNotificationManager;
    NotificationCompat.Builder mBuilder;
    String urlPath;

    int progress;
    final int NOTIFYCATIONID = 1001;

    public EppNotificationControl(String urlPath) {
        initNotifycation();
        this.urlPath = urlPath;
    }

    private void initNotifycation() {
        mNotificationManager = (NotificationManager) EpaApplication
                .getEpaApplication()
                .getSystemService(
                        EpaApplication.getEpaApplication().NOTIFICATION_SERVICE);
        mBuilder = new NotificationCompat.Builder(
                EpaApplication.getEpaApplication());
        mBuilder.setWhen(System.currentTimeMillis()).setSmallIcon(
                R.drawable.ic_launcher);
    }

    public void showProgressNotify() {
        mBuilder.setContentTitle("等待下载").setContentText("进度:")
                .setTicker("开始下载");// 通知首次出现在通知栏，带上升动画效果的
        Notification mNotification = mBuilder.build();
        mNotification.flags = Notification.FLAG_ONGOING_EVENT;//
        // 确定进度的
        mBuilder.setProgress(100, progress, false); // 这个方法是显示进度条 设置为true就是不确定的那种进度条效果
        mNotificationManager.notify(NOTIFYCATIONID, mNotification);
    }

    /** 设置下载进度 */
    public void updateNotification(int progress) {
        Notification mNotification = mBuilder.build();
        mNotification.flags = Notification.FLAG_ONGOING_EVENT;//
        mBuilder.setProgress(100, progress, false); // 这个方法是显示进度条
        mBuilder.setContentText("下载中...").setContentTitle("");
        if (progress >= 100) {
            mBuilder.setContentText("").setContentTitle("完成");
            new Thread(new Runnable() {
                public void run() {
                    Message msg = handler.obtainMessage();
                    msg.sendToTarget();
                }
            }).start();

        }
        mNotificationManager.notify(NOTIFYCATIONID, mNotification);
    }

    /**
     * 异步安装apk
     */
    Handler handler = new Handler() {

        public void handleMessage(android.os.Message msg) {
            Intent apkIntent = new Intent();
            apkIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            apkIntent.setAction(android.content.Intent.ACTION_VIEW);
            File apkFile = new File(urlPath);
            Uri uri = Uri.fromFile(apkFile);
            apkIntent.setDataAndType(uri,
                    "application/vnd.android.package-archive");
            EpaApplication.getEpaApplication().startActivity(apkIntent);
            mNotificationManager.cancel(NOTIFYCATIONID);// 删除一个特定的通知ID对应的通知
        };
    };

}