android 安装更新

package com.jh.rental.user.presenter.photo;import android.app.Activity;import android.app.Dialog;import android.app.ProgressDialog;import android.content.Context;import android.content.Intent;import android.net.Uri;import android.os.Build;import android.os.Environment;import android.support.v4.content.FileProvider;import android.text.TextUtils;import com.jh.rental.user.R;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import java.util.Timer;import java.util.TimerTask;/** * Created by maning on 16/8/15. * 下载更新APK的工具 */public class InstallUtils {    //任务定时器    private Timer mTimer;    //定时任务    private TimerTask mTask;    //文件总大小    private int fileLength = 1;    //下载的文件大小    private int fileCurrentLength;    private Context context;    private String httpUrl;    private String savePath;    private String saveName;    private DownloadCallBack downloadCallBack;    private static File saveFile;    private boolean isComplete = false;    public interface DownloadCallBack {        void onStart();        void onComplete(String path);        void onLoading(long total, long current);        void onFail(Exception e);    }    public interface InstallCallBack {        void onSuccess();        void onFail(Exception e);    }private ProgressDialog dialog;    private void initDialog(){        dialog = new ProgressDialog(context);        dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);        dialog.setTitle("海龟出行");        dialog.setMessage("程序正在更新...请稍等");        dialog.setIcon(R.drawable.turtle4);        dialog.setMax(100);        dialog.setCancelable(true);    }    public InstallUtils(Context context, String httpUrl, String saveName, DownloadCallBack downloadCallBack) {        this.context = context;        this.httpUrl = httpUrl;        this.saveName = saveName;        this.downloadCallBack = downloadCallBack;        this.savePath = getCachePath(this.context);        initDialog();    }    public void downloadAPK() {          if (TextUtils.isEmpty(httpUrl)) {            return;        }        saveFile = new File(savePath);        if (!saveFile.exists()) {            boolean isMK = saveFile.mkdirs();            if (!isMK) {                //创建失败                return;            }        }        saveFile = new File(savePath + File.separator + saveName + ".apk");        if (downloadCallBack != null) {            //下载开始            downloadCallBack.onStart();            dialog.show();        }        new Thread(new Runnable() {            @Override            public void run() {                InputStream inputStream = null;                FileOutputStream outputStream = null;                HttpURLConnection connection = null;                try {                    URL url = new URL(httpUrl);                    connection = (HttpURLConnection) url.openConnection();                    connection.setConnectTimeout(10 * 1000);                    connection.setReadTimeout(10 * 1000);                    connection.connect();                    inputStream = connection.getInputStream();                    outputStream = new FileOutputStream(saveFile);                    fileLength = connection.getContentLength();                    //计时器                    initTimer();                    byte[] buffer = new byte[1024];                    int current = 0;                    int len;                    while ((len = inputStream.read(buffer)) > 0) {                        outputStream.write(buffer, 0, len);                        current += len;                        if (fileLength > 0) {                            fileCurrentLength = current;                        }                    }                    isComplete = true;                    //下载完成                    ((Activity) context).runOnUiThread(new Runnable() {                        @Override                        public void run() {                            if (downloadCallBack != null) {                                downloadCallBack.onComplete(saveFile.getPath());                                downloadCallBack = null;                            }                        }                    });                } catch (final Exception e) {                    e.printStackTrace();                    ((Activity) context).runOnUiThread(new Runnable() {                        @Override                        public void run() {                            if (downloadCallBack != null) {                                downloadCallBack.onFail(e);                                downloadCallBack = null;                            }                        }                    });                } finally {                    try {                        if (inputStream != null)                            inputStream.close();                        if (outputStream != null)                            outputStream.close();                        if (connection != null)                            connection.disconnect();                    } catch (IOException e) {                    }                    //销毁Timer                    destroyTimer();                }            }        }).start();    }    private void initTimer() {        mTimer = new Timer();        mTask = new TimerTask() {//在run方法中执行定时的任务            @Override            public void run() {                ((Activity) context).runOnUiThread(new Runnable() {                    @Override                    public void run() {                        if (downloadCallBack != null) {                            if (!isComplete) {                                downloadCallBack.onLoading(fileLength, fileCurrentLength);                            }                        }                    }                });            }        };        //任务定时器一定要启动        mTimer.schedule(mTask, 0, 200);    }    private void destroyTimer() {        dialog.dismiss();        if (mTimer != null && mTask != null) {            mTask.cancel();            mTimer.cancel();            mTask = null;            mTimer = null;        }    }    /**     * 安装APK工具类     * @param context       上下文     * @param filePath      文件路径     * @param authorities   Manifest中配置provider的authorities字段     * @param callBack      安装界面成功调起的回调     */    public static void installAPK(Context context, String filePath, String authorities, InstallCallBack callBack) {        try {            Intent intent = new Intent();            intent.setAction(Intent.ACTION_VIEW);            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);            File apkFile = new File(filePath);            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {                intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);                Uri contentUri = FileProvider.getUriForFile(context, authorities, apkFile);                intent.setDataAndType(contentUri, "application/vnd.android.package-archive");            } else {                intent.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive");            }            context.startActivity(intent);            if (callBack != null) {                callBack.onSuccess();            }        } catch (Exception e) {            if (callBack != null) {                callBack.onFail(e);            }        }    }    /**     * 获取app缓存路径    SDCard/Android/data/你的应用的包名/cache     *     * @param context     * @return     */    public String getCachePath(Context context) {        String cachePath;        if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())                || !Environment.isExternalStorageRemovable()) {            //外部存储可用            cachePath = context.getExternalCacheDir().getPath();        } else {            //外部存储不可用            cachePath = context.getCacheDir().getPath();        }        return cachePath;    }}