我的应用程序出现问题。要使用选项,我需要授予外部存储访问权限。我在那里找到了完美的代码:public boolean isStoragePermissionGranted() {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { if (checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) { Log.v(TAG,"Permission is granted"); return true; } else { Log.v(TAG,"Permission is revoked"); ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1); return false; }}else { //permission is automatically granted on sdk<23 upon installation Log.v(TAG,"Permission is granted"); return true;}}问题是,代码工作正常,但我不明白如果未授予访问权限,如何阻止我自己的代码继续(或等待用户单击“允许”,然后再继续我的代码)。我的代码:isStoragePermissionGranted(); File outputFile = new File(""); InputStream is = getResources().openRawResource(((Sound) adapter.getItem(index)).getMpsound()); try { byte[] buffer = new byte[is.available()]; is.read(buffer); File outputDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS); outputFile = new File(outputDir, getResources().getResourceEntryName(((Sound) adapter.getItem(index)).getMpsound()) + ".mp3"); OutputStream os = new FileOutputStream(outputFile); os.write(buffer); } catch (IOException e) { e.printStackTrace(); } Intent share = new Intent(Intent.ACTION_SEND); share.setType("audio/*"); share.putExtra(Intent.EXTRA_STREAM, FileProvider.getUriForFile(this, BuildConfig.APPLICATION_ID + ".provider", outputFile)); share.putExtra(Intent.EXTRA_TEXT, "\"" + ((Sound) adapter.getItem(index)).getTitre_show() + "\" shared by my app !"); startActivity(Intent.createChooser(share, "Share Sound File")); return true;目前,一切都已执行,即使未授予访问权限,应用程序也会尝试共享文件。所以这是行不通的。如果我返回,则会弹出请求允许访问的窗口,等待答案。我怎样才能做到这一点?
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