安卓个版本安装app

6.0之前安装app

private boolean startInstall(Context context, Uri uri) {
        File apkFile = new File(uri.getPath());
        if (!apkFile.exists()) {
            Log.e("IDownloadService", " local file has been deleted! ");
            return false;
        }


        Intent intent = new Intent();
        //intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setAction(Intent.ACTION_VIEW);
        //判断是否是AndroidN以及更高的版本
      
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.setDataAndType(Uri.fromFile(apkFile), 
         "application/vnd.android.package-archive");
      
        context.startActivity(intent);
        return true;
    }

7.0安装app

private boolean startInstall(Context context, Uri uri) {
        File apkFile = new File(uri.getPath());
        if (!apkFile.exists()) {
            Log.e("IDownloadService", " local file has been deleted! ");
            return false;
        }


        Intent intent = new Intent();
        //intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setAction(Intent.ACTION_VIEW);
        //判断是否是AndroidN以及更高的版本
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
            Uri contentUri = FileProvider.getUriForFile(context, Config.APPLICATION_ID + ".fileProvider", apkFile);
            intent.setDataAndType(contentUri, "application/vnd.android.package-archive");
        } else {
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive");
        }

        context.startActivity(intent);
        return true;
    }

在 xml 添加 file_paths.xml 文件

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <external-path path="Android/data/com.eventmosh.evente/" name="files_root" />
    <external-path path="." name="external_storage_root" />
</paths>

manifests 配置

 <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="包名.fileProvider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths" />
        </provider>

8.0安装app

添加权限

<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>