Android(安卓)app内部下载安装

    // 3.下载成功，开始安装,兼容8.0安装位置来源的权限    public static void installApkO(Activity context, String downloadApkPath) {        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {            //是否有安装位置来源的权限            boolean haveInstallPermission = context.getPackageManager().canRequestPackageInstalls();            if (haveInstallPermission) {//                L.i("8.0手机已经拥有安装未知来源应用的权限，直接安装！");                Utils.installApk(context, downloadApkPath);            } else {                Uri packageUri = Uri.parse("package:" + context.getPackageName());                Intent intent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES, packageUri);                context.startActivityForResult(intent, 10086);            }        } else {            Utils.installApk(context, downloadApkPath);        }    }

public static void installApk(Context context, String downloadApk) {        Intent intent = new Intent(Intent.ACTION_VIEW);        File file = new File(downloadApk);//        L.i("安装路径=="+downloadApk);        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {            Uri apkUri = FileProvider.getUriForFile(context, BaseApplication.getInstace().getApplication().getPackageName() + ".fileProvider", file);            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);            intent.setDataAndType(apkUri, "application/vnd.android.package-archive");        } else {            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);            Uri uri = Uri.fromFile(file);            intent.setDataAndType(uri, "application/vnd.android.package-archive");        }        context.startActivity(intent);    }

需要配置

文件provider_paths.xml

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