动态申请权限之后还是报原来的错！为什么解决问题的评论多了就看不到评论了？

com.studio.handlerproject;

android.Manifest;
android.app.Activity;
android.app.AlertDialog;

android.content.DialogInterface;
android.content.Intent;
android.content.pm.PackageManager;

android.net.Uri;
android.os.Bundle;
android.os.Environment;
android.os.Handler;
android.os.Message;
android.provider.Settings;
android.support.v4.app.ActivityCompat;
android.support.v4.content.ContextCompat;
android.view.View;
android.widget.ProgressBar;
android.widget.Toast;

java.io.File;
java.io.FileOutputStream;
java.io.IOException;
java.io.InputStream;
java.io.OutputStream;
java.net.MalformedURLException;
java.net.URL;
java.net.URLConnection;

DownloadActivity Activity {
    = ;
    Handler ;
    =;

    = ;
    onCreate(Bundle savedInstanceState) {
        .onCreate(savedInstanceState);
        setContentView(R.layout.);

        ProgressBar progressBar= (ProgressBar) findViewById(R.id.);

        findViewById(R.id.).setOnClickListener(View.OnClickListener() {
            onClick(View v) {
                Thread(Runnable() {
                    run() {
                        download();
                    }
                }).start();
            }
        });
        = Handler(){
            handleMessage(Message msg) {
                .handleMessage(msg);
                (msg.){
                    :
                        .setProgress((Integer) msg.);
                        number=(Integer) msg.;
                        (number==){
                            Toast.(DownloadActivity., , Toast.).show();
                        }
                        ;
                    :
                        Toast.(DownloadActivity., , Toast.).show();
                        ;
                }
            }
        };

    }

    download(String s) {
        {
            URL url=URL(s);
            {
                URLConnection urlConnection=url.openConnection();

                InputStream inputStream=urlConnection.getInputStream();

                contentLength=urlConnection.getContentLength();

                String downloadFolderName= Environment.()+ File.++File.;

                File file=File(downloadFolderName);
                (!file.exists()){
                    file.mkdirs();
                }

                String fileName=downloadFolderName+;
                File apkFile=File(fileName);
                (apkFile.exists()){
                    apkFile.delete();
                }
                downloadSize=;
                [] bytes=[];
                length;
                OutputStream outputStream=FileOutputStream(fileName);
                ((length=inputStream.read(bytes))!=-){
                    outputStream.write(bytes,,length);
                    downloadSize+=length;

                    Message message=Message.();
                    message.=downloadSize*/contentLength;

                    message.= ;
                    .sendMessage(message);

                }
                inputStream.close();
                outputStream.close();
            } (IOException e) {
                Message message=Message.();
                message.= ;
                .sendMessage(message);

                e.printStackTrace();
            }
        } (MalformedURLException e) {
            Message message=Message.();
            message.= ;
            .sendMessage(message);
            e.printStackTrace();
        }

    }


    click(View view) {
        isAllGranted = checkPermissionAllGranted(
                String[] {
                        Manifest.permission.,
                        Manifest.permission.,
                        Manifest.permission.}
        );
        (isAllGranted) {
            doBackup();
            ;
        }
        ActivityCompat.(
                ,
                String[] {
                        Manifest.permission.,
                        Manifest.permission.,
                        Manifest.permission.},
                );
    }

    checkPermissionAllGranted(String[] permissions){
        (String permission : permissions){
            (ContextCompat.(,permission)!=PackageManager.){
                ;
            }
        }
        ;
    }

    onRequestPermissionsResult(requestCode, String[] permissions, [] grantResults) {
        .onRequestPermissionsResult(requestCode, permissions, grantResults);
        (requestCode==){
            isAllGranted=;
            (grant : grantResults){
                (grant!=PackageManager.){
                    isAllGranted=;
                    ;
                }
            }
            (isAllGranted){
                doBackup();
            }{
                openAppDetails();
            }
        }
    }

    doBackup(){
        Toast.(DownloadActivity., , Toast.).show();
    }

    openAppDetails(){
        AlertDialog.Builder builder=AlertDialog.Builder();
        builder.setMessage();
        builder.setPositiveButton(, DialogInterface.OnClickListener() {
            onClick(DialogInterface dialog, which) {
                Intent intent=Intent();
                intent.setAction(Settings.);
                intent.addCategory(Intent.);
                intent.setData(Uri.(+getPackageName()));
                intent.addFlags(Intent.);
                intent.addFlags(Intent.);
                intent.addFlags(Intent.);
                startActivity(intent);
            }
        });
        builder.setNegativeButton(,);
        builder.show();
    }
}