Android 6.0 权限管理工具类

工具类实现

public class EasyPermission {

    public static final int SETTINGS_REQ_CODE = 16061;

    public interface PermissionCallback extends ActivityCompat.OnRequestPermissionsResultCallback {

        void onPermissionGranted(int requestCode, List<String> perms);

        void onPermissionDenied(int requestCode, List<String> perms);

    }

    private Object object;
    private String[] mPermissions;
    private String mRationale;
    private int mRequestCode;
    @StringRes private int mPositiveButtonText = android.R.string.ok;
    @StringRes private int mNegativeButtonText = android.R.string.cancel;


    private EasyPermission(Object object) {
        this.object = object;
    }

    public static EasyPermission with(Activity activity) {
        return new EasyPermission(activity);
    }

    public static EasyPermission with(Fragment fragment) {
        return new EasyPermission(fragment);
    }

    public EasyPermission permissions(String... permissions) {
        this.mPermissions = permissions;
        return this;
    }

    public EasyPermission rationale(String rationale) {
        this.mRationale = rationale;
        return this;
    }

    public EasyPermission addRequestCode(int requestCode) {
        this.mRequestCode = requestCode;
        return this;
    }

    public EasyPermission positveButtonText(@StringRes int positiveButtonText) {
        this.mPositiveButtonText = positiveButtonText;
        return this;
    }

    public EasyPermission nagativeButtonText(@StringRes int negativeButtonText) {
        this.mNegativeButtonText = negativeButtonText;
        return this;
    }

    public void request() {
        requestPermissions(object, mRationale, mPositiveButtonText, mNegativeButtonText, mRequestCode,
                mPermissions);
    }

    /**
     * Check if the calling context has a set of permissions.
     */
    public static boolean hasPermissions(Context context, String... perms) {
        // Always return true for SDK < M, let the system deal with the permissions
        if (!UIUtils.isOverMarshmallow()) {
            return true;
        }

        for (String perm : perms) {
            boolean hasPerm =
                    (ContextCompat.checkSelfPermission(context, perm) == PackageManager.PERMISSION_GRANTED);
            if (!hasPerm) {
                return false;
            }
        }

        return true;
    }

    /**
     * Request a set of permissions, showing rationale if the system requests it.
     */
    public static void requestPermissions(final Object object, String rationale, final int requestCode,
                                          final String... perms) {
        requestPermissions(object, rationale, android.R.string.ok, android.R.string.cancel, requestCode,
                perms);
    }

    /**
     * Request a set of permissions, showing rationale if the system requests it.
     */
    public static void requestPermissions(final Object object, String rationale,
                                          @StringRes int positiveButton, @StringRes int negativeButton, final int requestCode,
                                          final String... permissions) {

        checkCallingObjectSuitability(object);

        PermissionCallback mCallBack = (PermissionCallback) object;

        if (!UIUtils.isOverMarshmallow()) {
            mCallBack.onPermissionGranted(requestCode, Arrays.asList(permissions));
            return;
        }

        final List<String> deniedPermissions =
                UIUtils.findDeniedPermissions(UIUtils.getActivity(object), permissions);


        boolean shouldShowRationale = false;
        for (String perm : deniedPermissions) {
            shouldShowRationale =
                    shouldShowRationale || UIUtils.shouldShowRequestPermissionRationale(object, perm);
        }

        if (UIUtils.isEmpty(deniedPermissions)) {
            mCallBack.onPermissionGranted(requestCode, Arrays.asList(permissions));
        } else {

            final String[] deniedPermissionArray =
                    deniedPermissions.toArray(new String[deniedPermissions.size()]);

            if (shouldShowRationale) {
                Activity activity = UIUtils.getActivity(object);
                if (null == activity) {
                    return;
                }

                new AlertDialog.Builder(activity).setMessage(rationale)
                        .setPositiveButton(positiveButton, new DialogInterface.OnClickListener() {
                            @Override public void onClick(DialogInterface dialog, int which) {
                                executePermissionsRequest(object, deniedPermissionArray, requestCode);
                            }
                        })
                        .setNegativeButton(negativeButton, new DialogInterface.OnClickListener() {
                            @Override public void onClick(DialogInterface dialog, int which) {
                                // act as if the permissions were denied
                                ((PermissionCallback) object).onPermissionDenied(requestCode,
                                        deniedPermissions);
                            }
                        })
                        .create()
                        .show();
            } else {
                executePermissionsRequest(object, deniedPermissionArray, requestCode);
            }
        }
    }

    @TargetApi(23)
    private static void executePermissionsRequest(Object object, String[] perms, int requestCode) {
        checkCallingObjectSuitability(object);

        if (object instanceof Activity) {
            ActivityCompat.requestPermissions((Activity) object, perms, requestCode);
        } else if (object instanceof Fragment) {
            ((Fragment) object).requestPermissions(perms, requestCode);
        } else if (object instanceof android.app.Fragment) {
            ((android.app.Fragment) object).requestPermissions(perms, requestCode);
        }
    }

    /**
     * Handle the result of a permission request.
     */
    public static void onRequestPermissionsResult(Object object, int requestCode, String[] permissions,
                                                  int[] grantResults) {
        checkCallingObjectSuitability(object);

        PermissionCallback mCallBack = (PermissionCallback) object;

        List<String> deniedPermissions = new ArrayList<>();
        for (int i = 0; i < grantResults.length; i++) {
            if (grantResults[i] != PackageManager.PERMISSION_GRANTED) {
                deniedPermissions.add(permissions[i]);
            }
        }

        if (UIUtils.isEmpty(deniedPermissions)) {
            mCallBack.onPermissionGranted(requestCode, Arrays.asList(permissions));
        } else {
            mCallBack.onPermissionDenied(requestCode, deniedPermissions);
        }
    }

    /**
     * with a {@code null} argument for the negative buttonOnClickListener.
     */
    public static boolean checkDeniedPermissionsNeverAskAgain(final Object object, String rationale,
                                                              @StringRes int positiveButton, @StringRes int negativeButton, List<String> deniedPerms) {
        return checkDeniedPermissionsNeverAskAgain(object, rationale, positiveButton, negativeButton, null,
                deniedPerms);
    }

    /**
     * 在OnActivityResult中接收判断是否已经授权
     * 使用{@link EasyPermission#hasPermissions(Context, String...)}进行判断
     *
     * If user denied permissions with the flag NEVER ASK AGAIN, open a dialog explaining the
     * permissions rationale again and directing the user to the app settings. After the user
     * returned to the app, {@link Activity#onActivityResult(int, int, Intent)} or
     * {@link Fragment#onActivityResult(int, int, Intent)} or
     * {@link android.app.Fragment#onActivityResult(int, int, Intent)} will be called with
     * {@value #SETTINGS_REQ_CODE} as requestCode
     * <p>
     *
     * NOTE: use of this method is optional, should be called from
     * {@link PermissionCallback#onPermissionDenied(int, List)}
     *
     * @return {@code true} if user denied at least one permission with the flag NEVER ASK AGAIN.
     */
    public static boolean checkDeniedPermissionsNeverAskAgain(final Object object, String rationale,
                                                              @StringRes int positiveButton, @StringRes int negativeButton,
                                                              @Nullable DialogInterface.OnClickListener negativeButtonOnClickListener,
                                                              List<String> deniedPerms) {
        boolean shouldShowRationale;
        for (String perm : deniedPerms) {
            shouldShowRationale = UIUtils.shouldShowRequestPermissionRationale(object, perm);

            if (!shouldShowRationale) {
                final Activity activity = UIUtils.getActivity(object);
                if (null == activity) {
                    return true;
                }

                new AlertDialog.Builder(activity).setMessage(rationale)
                        .setPositiveButton(positiveButton, new DialogInterface.OnClickListener() {
                            @Override public void onClick(DialogInterface dialog, int which) {
                                Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                                Uri uri = Uri.fromParts("package", activity.getPackageName(), null);
                                intent.setData(uri);
                                startAppSettingsScreen(object, intent);
                            }
                        })
                        .setNegativeButton(negativeButton, negativeButtonOnClickListener)
                        .create()
                        .show();

                return true;
            }
        }

        return false;
    }


    @TargetApi(11) private static void startAppSettingsScreen(Object object, Intent intent) {
        if (object instanceof Activity) {
            ((Activity) object).startActivityForResult(intent, SETTINGS_REQ_CODE);
        } else if (object instanceof Fragment) {
            ((Fragment) object).startActivityForResult(intent, SETTINGS_REQ_CODE);
        } else if (object instanceof android.app.Fragment) {
            ((android.app.Fragment) object).startActivityForResult(intent, SETTINGS_REQ_CODE);
        }
    }

    private static void checkCallingObjectSuitability(Object object) {

        if (!((object instanceof Fragment)
                || (object instanceof Activity)
                || (object instanceof android.app.Fragment))) {
            throw new IllegalArgumentException("Caller must be an Activity or a Fragment.");
        }


        if (!(object instanceof PermissionCallback)) {
            throw new IllegalArgumentException("Caller must implement PermissionCallback.");
        }
    }

}

简单使用例子

implements EasyPermission.PermissionCallback

然后在onRequestPermissionsResult里面调下面的方法

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        EasyPermission.onRequestPermissionsResult(this, requestCode, permissions, grantResults);
}

onPermissionGranted 用户授予所有权限

onPermissionDenied 用户拒绝至少一个权限

申请权限

EasyPermission.with(this)
                .addRequestCode(RC_CAMERA_AND_AUDIO)
                .permissions(new String[]{Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA})
                .rationale(getString(R.string.rationale_camera_audio))
                .request();