Question

我为Android 6提供了几个运行时预留，但是每次重启设备或onclick到服务启动时都会出现一个对话框系统警报和读取联系人权限。我的应用程序在后台工作（作为重启后广播调用的服务）这是第一个权限，我注意到它上面没有再次询问选项

这是我说的第二个系统警报

立即我怎么能一次给予许可，从不再问我已经检查了许可，但这是不同的事情，只是为了阅读联系人的许可

Answer 1

的文档中

Android发出请求的方式取决于系统版本以及应用定位的系统版本：

如果设备运行 Android 6.0（API级别23）或更高级别，并且应用的 targetSdkVersion为23或更高，该应用在运行时请求用户的权限。用户可以随时撤消权限，因此应用程序需要在每次访问受权限保护的API时检查其是否具有权限。有关在应用程序中请求权限的详细信息，请参阅“使用系统权限”培训指南。

您可以设置app's targetSdkVersion is 22 or lower

如上所述：

如果设备运行的是Android 5.1.1（API级别22）或更低版本，或者应用程序的targetSdkVersion为22或更低，系统会要求用户在用户安装时授予权限应用程序。如果您向应用程序的更新版本添加新权限，系统会要求用户在用户更新应用程序时授予该权限。用户安装应用后，他们撤销权限的唯一方法是卸载应用。

您也可以使用我的自定义权限类

    package ...;

package admin4.techelm.com.techelmtechnologies.common.utility;

import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.StrictMode;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AlertDialog;
import android.util.Log;

import java.lang.reflect.Method;

public class PermissionUtil {

    private static final String TAG = PermissionUtil.class.getSimpleName();

    public static final int REQUEST_EXTERNAL_STORAGE = 1;
    private static final int WRITE_EXTERNAL_PERMISSION_REQUEST_CODE = 1;
    public static final int READ_EXTERNAL_PERMISSION_REQUEST_CODE = 2;
    public static final int RECORD_AUDIO_PERMISSION_REQUEST_CODE = 3;
    public static final int CAMERA_PERMISSION_REQUEST_CODE = 4;

    private static String[] PERMISSIONS_WRITE_STORAGE = {Manifest.permission.WRITE_EXTERNAL_STORAGE};
    private static String[] PERMISSIONS_READ_STORAGE = {Manifest.permission.READ_EXTERNAL_STORAGE};
    private static String[] PERMISSIONS_AUDIO = {Manifest.permission.RECORD_AUDIO};
    private static String[] PERMISSIONS_CAMERA = {Manifest.permission.CAMERA};

    PermissionUtil() { }

    /**
     * SAMPLER
     * Checks if the app has permission to write to device storage
     * <p/>
     * If the app does not has permission then the user will be prompted to grant permissions
     *
     * @param activity the mContext from which permissions are checked
     */
    public static void verifyStoragePermissions(Activity activity) {
        // Check if we have write permission
        int permission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);

        if (permission != PackageManager.PERMISSION_GRANTED) {
            // We don't have permission so prompt the user
            ActivityCompat.requestPermissions(
                    activity,
                    PERMISSIONS_WRITE_STORAGE,
                    WRITE_EXTERNAL_PERMISSION_REQUEST_CODE
            );
        }
    }

    public static void verrifyReadStoragePermissions(Activity activity) {
        int permission = ActivityCompat.checkSelfPermission(activity, PERMISSIONS_READ_STORAGE[0]);
        if (isPermissionDenied(permission)) {
            processPermission(activity, PERMISSIONS_READ_STORAGE[0], PERMISSIONS_READ_STORAGE, READ_EXTERNAL_PERMISSION_REQUEST_CODE);
        }
    }

    public static void verrifyWriteStoragePermissions(Activity activity) {
        int permission = ActivityCompat.checkSelfPermission(activity, PERMISSIONS_WRITE_STORAGE[0]);
        if (isPermissionDenied(permission)) {
            processPermission(activity, PERMISSIONS_WRITE_STORAGE[0], PERMISSIONS_WRITE_STORAGE, WRITE_EXTERNAL_PERMISSION_REQUEST_CODE);
        }
    }

    public static void verrifyRecordAudioPermissions(Activity activity) {
        int permission = ActivityCompat.checkSelfPermission(activity, PERMISSIONS_AUDIO[0]);
        if (isPermissionDenied(permission)) {
            processPermission(activity, PERMISSIONS_AUDIO[0], PERMISSIONS_AUDIO, RECORD_AUDIO_PERMISSION_REQUEST_CODE);
        }
    }

    public static void verrifyCameraPermissions(Activity activity) {
        int permission = ActivityCompat.checkSelfPermission(activity, PERMISSIONS_CAMERA[0]);
        if (isPermissionDenied(permission)) {
            processPermission(activity, PERMISSIONS_CAMERA[0], PERMISSIONS_CAMERA, CAMERA_PERMISSION_REQUEST_CODE);
        }
    }

    private static boolean isPermissionDenied(int permission) {
        return permission != PackageManager.PERMISSION_GRANTED;
    }

    private static void processPermission(Activity activity, String permissionManifest, String[] permissions, int requestCode) {
        if (ActivityCompat.shouldShowRequestPermissionRationale(activity, permissionManifest)) {
            Log.e(TAG, "shouldShowRequestPermissionRationale is invoked " + permissionManifest);
        } else {
            ActivityCompat.requestPermissions(activity, permissions, requestCode);
            Log.e(TAG, "requestPermissions is invoked " + permissionManifest);
        }
    }

    /**
     * SAMPLER
     * Request the permissions you need
        If your app doesn't already have the permission it needs, the app must call one of the requestPermissions() methods to request the appropriate permissions.
        Your app passes the permissions it wants, and also an integer request code that you specify to identify this permission request.
        This method functions asynchronously: it returns right away, and after the user responds to the dialog box,
        the system calls the app's callback method with the results, passing the same request code that the app passed to requestPermissions().
     * @param activity - you mContext
     */
    public static void verifyShowRequestPrompt(Activity activity) {
        // Should we show an explanation?
        if (ActivityCompat.shouldShowRequestPermissionRationale(activity,
                Manifest.permission.CAMERA)) {

            // Show an explanation to the user *asynchronously* -- don't block
            // this thread waiting for the user's response! After the user
            // sees the explanation, try again to request the permission.
            Log.e(TAG, "shouldShowRequestPermissionRationale is invoked");
        } else {

            // No explanation needed, we can request the permission.

            ActivityCompat.requestPermissions(activity,
                    new String[]{Manifest.permission.CAMERA},
                    WRITE_EXTERNAL_PERMISSION_REQUEST_CODE);

            // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
            // app-defined int constant. The callback method gets the
            // result of the request.
        }
    }

    /**
     * ABOVE CODES is not used
     * @param activity
     */

    public static void initPermissions(final Activity activity) {
        // The request code used in ActivityCompat.requestPermissions()
        // and returned in the Activity's onRequestPermissionsResult()
        // int PERMISSION_ALL = 1;
        final String[] PERMISSIONS = {
                Manifest.permission.READ_EXTERNAL_STORAGE,
                Manifest.permission.WRITE_EXTERNAL_STORAGE,
                Manifest.permission.RECORD_AUDIO,
                Manifest.permission.CAMERA};
        if(!hasPermissions(activity, PERMISSIONS)) {
            showMessageOKCancel(activity, "These permissions are mandatory for the application. Please allow access.",
                    new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            if (!hasPermissions(activity, PERMISSIONS)) {
                                ActivityCompat.requestPermissions(activity, PERMISSIONS, REQUEST_EXTERNAL_STORAGE);
                            }
                        }
                    });
        }

        setGAlleryPermissionIntent();
    }

    public static void initPermissions(final Context context) {
        // The request code used in ActivityCompat.requestPermissions()
        // and returned in the Activity's onRequestPermissionsResult()
        // int PERMISSION_ALL = 1;
        final String[] PERMISSIONS = {
                Manifest.permission.READ_EXTERNAL_STORAGE,
                Manifest.permission.WRITE_EXTERNAL_STORAGE,
                Manifest.permission.RECORD_AUDIO,
                Manifest.permission.CAMERA};
        if(!hasPermissions(context, PERMISSIONS)) {
            showMessageOKCancel(context, "These permissions are mandatory for the application. Please allow access.",
                    new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            if (!hasPermissions(context, PERMISSIONS)) {
                                ActivityCompat.requestPermissions((Activity) context, PERMISSIONS, REQUEST_EXTERNAL_STORAGE);
                            }
                        }
                    });
        }

        setGAlleryPermissionIntent();
    }

    public static boolean hasPermissions(final Context context, final 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;
    }

    private static void showMessageOKCancel(Context context, String message, DialogInterface.OnClickListener okListener) {
        new AlertDialog.Builder(context)
                .setMessage(message)
                .setPositiveButton("OK", okListener)
                .setNegativeButton("Cancel", null)
                .create()
                .show();
    }

    public static void setGAlleryPermissionIntent() {
        if(Build.VERSION.SDK_INT>=24){
            try{
                Method m = StrictMode.class.getMethod("disableDeathOnFileUriExposure");
                m.invoke(null);
            }catch(Exception e){
                e.printStackTrace();
            }
        }
    }
}

请在您的活动中调用此内容。

   void onCreate(...) {
      PermissionUtil.verrifyReadStoragePermissions(this);
      ...
   }

android 6系统警报权限..！

1 个答案: