应用程序崩溃而没有显示权限对话框，但是在手动授予权限时可以正常运行

Question

我对Android开发比较陌生。我有一个需要特定权限的应用程序。这些已添加到AndroidManifest.xml中：

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.STORAGE"/>
    <uses-permission android:name="android.permission.PHONE"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.READ_LOGS" />
    <uses-permission android:name="android.permission.READ_CALL_LOG" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />

该应用在初次启动时崩溃（在仿真设备上并安装了APK），但在手动授予 CAMERA ， PHONE 和 STORAGE 权限后从手机的设置，它可以正常工作。

在MainActivity中，我还添加了以下权限检查（在onCreate中）：

 // CAMERA permission
 if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
    // Permission is not granted
    ActivityCompat.requestPermissions(this,
       new String[]{Manifest.permission.CAMERA},
           1);
        }

但是该应用在启动时始终崩溃，而没有显示权限对话框。我在这里做什么错了？

编辑 错误跟踪：

Answer 1

您可以尝试下面的代码，这对我有用。它用于相机和存储。调用此方法checkAndRequestPermissions（）;

private void checkAndRequestPermissions() {
        int PERMISSION_ALL = 1;
        String[] PERMISSIONS = {Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA};

        if (!hasPermissions(this, PERMISSIONS)) {
            ActivityCompat.requestPermissions(this, PERMISSIONS, PERMISSION_ALL);
        }
    }


public static boolean hasPermissions(Context context, String... permissions) {
    if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {
        for (String permission : permissions) {
            if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
                return false;
            }
        }
    }
    return true;
}

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    switch (requestCode) {
        case 1:
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                //granted
            } else {
                //not granted

                if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) || ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.CAMERA)) {
                    showDialogOK(getString(R.string.app_permission_allow),
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    switch (which) {
                                        case DialogInterface.BUTTON_POSITIVE:
                                            checkAndRequestPermissions();
                                            break;
                                    }
                                }
                            });
                }
                //permission is denied (and never ask again is  checked)
                //shouldShowRequestPermissionRationale will return false
                else {
                    showDialogOK(getString(R.string.app_permission_necessary),
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    switch (which) {
                                        case DialogInterface.BUTTON_POSITIVE:
                                            finish();
                                            Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                                            Uri uri = Uri.fromParts("package", getPackageName(), null);
                                            intent.setData(uri);
                                            startActivity(intent);
                                            break;
                                    }
                                }
                            });


                }
            }
            break;
        default:
            super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }
}