Android(安卓)DownloadManager下载并安装apk

下载方法：

if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M) {            try {                //检测是否有写的权限                int permission = ActivityCompat.checkSelfPermission(this,                        "android.permission.WRITE_EXTERNAL_STORAGE");                if (permission != PackageManager.PERMISSION_GRANTED) {                    ToastUtil.show("请允许读写存储权限，否则APP无法正常运行！");                    // 没有写的权限，去申请写的权限，会弹出对话框                    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},1);                }            } catch (Exception e) {                e.printStackTrace();            }        } // H5中包含下载链接的话让外部浏览器去处理//                Intent intent = new Intent(Intent.ACTION_VIEW);//                intent.addCategory(Intent.CATEGORY_BROWSABLE);//                intent.setData(Uri.parse(url));//                startActivity(intent);                //使用手机下载器下载                String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getAbsolutePath() + File.separator +"DownLoadApp.apk";                File apkFile = new File(path);                if (apkFile.exists()) {                    apkFile.delete();                }                if(downloadId != 0) {                    clearCurrentTask(downloadId);                }                Uri uri = Uri.parse(url);                DownloadManager.Request request = new DownloadManager.Request(uri);                // 设置下载路径和文件名//                request.setDestinationInExternalPublicDir("download", "DownLoadApp.apk");                request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);                request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "DownLoadApp.apk");                //通知栏描述信息                request.setDescription("下载完成后请点击安装");                // 设置为可被媒体扫描器找到//                request.allowScanningByMediaScanner();                // 设置为可见和可管理//                request.setVisibleInDownloadsUi(true);                request.setMimeType("application/vnd.android.package-archive");                DownloadManager dManager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);                dManager.enqueue(request);

添加广播进行安装：

import android.annotation.SuppressLint;import android.app.DownloadManager;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.SharedPreferences;import android.net.Uri;import android.os.Build;import android.os.Environment;import android.provider.Settings;import android.support.v4.content.FileProvider;import android.util.Log;import java.io.File;public class DownloadReceiver extends BroadcastReceiver {    @SuppressLint("NewApi")    public void onReceive(Context context, Intent intent) {        if (intent.getAction().equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)) {            long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);            installApk(context, id);        } else if (intent.getAction().equals(DownloadManager.ACTION_NOTIFICATION_CLICKED)) {            Intent viewDownloadIntent = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);            viewDownloadIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);            context.startActivity(viewDownloadIntent);        }    }    private void installApk(Context context, long downloadApkId) {        String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getAbsolutePath() + File.separator + "DownLoadApp.apk";        File apkFile = new File(path);        if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.N){            Uri apkUri = FileProvider.getUriForFile(context, "com.gxmokebook.monkebookgx.fileprovider", apkFile);            Intent install = new Intent(Intent.ACTION_VIEW);            install.addCategory(Intent.CATEGORY_DEFAULT);            install.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);            install.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);            install.setDataAndType(apkUri, "application/vnd.android.package-archive");            context.startActivity(install);        } else {            Intent intent = new Intent();            intent.setAction(Intent.ACTION_VIEW);            intent.addCategory(Intent.CATEGORY_DEFAULT);            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);            intent.setType("application/vnd.android.package-archive");            intent.setData(Uri.fromFile(apkFile));            intent.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive");            context.startActivity(intent);        }    }}

其他配置文件：

AndroidManifest.xml中添加以下代码：

在res文件夹下新建file_paths.xml文件：

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

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