android动态申请权限

最新推荐文章于 2025-04-30 16:54:39 发布

原创最新推荐文章于 2025-04-30 16:54:39 发布

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这篇博客详细介绍了在Android应用中如何进行动态权限申请，包括处理用户拒绝权限并选择‘不再提示’的情况，提供了相应的工具类和无权限时引导用户到设置页面的解决方案。

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权限申请

String[] needPermissions = {
                Manifest.permission.CAMERA
        };
        List<String> needRequestPermissonList = findDeniedPermissions(MainActivity.this,needPermissions);
        if (null != needRequestPermissonList
                && needRequestPermissonList.size() > 0) {
            ActivityCompat.requestPermissions(MainActivity.this,
                    needRequestPermissonList.toArray(
                            new String[needRequestPermissonList.size()]),
                    PERMISSON_REQUESTCODE);
        } else {
            Toast.makeText(MainActivity.this,"权限已申请好，在这里做操作",Toast.LENGTH_SHORT).show();
        }


private List<String> findDeniedPermissions(Activity activity, String[] permissions) {
        List<String> needRequestPermissonList = new ArrayList<String>();
        for (String perm : permissions) {
            if (ContextCompat.checkSelfPermission(activity,
                    perm) != PackageManager.PERMISSION_GRANTED
                    || ActivityCompat.shouldShowRequestPermissionRationale(
                    activity, perm)) {
                needRequestPermissonList.add(perm);
            }
        }
        return needRequestPermissonList;
    }

处理权限被拒绝且被选中“不再提示”的情况


@Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == PERMISSON_REQUESTCODE) {
            if (!Utils.verifyPermissions(grantResults)) {
                showMissingPermissionDialog();
            } else {

            }
        }
    }

工具类

public class Utils {

    public static boolean verifyPermissions(int[] grantResults) {
        //检测是否所有的权限都已经授权
        for (int result : grantResults) {
            if (result != PackageManager.PERMISSION_GRANTED) {
                return false;
            }
        }
        return true;
    }

}

无权限后弹框引导用户去设置权限的操作

 private void showMissingPermissionDialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
        builder.setTitle("温馨提示");
        builder.setIcon(R.drawable.ic_launcher);
        builder.setMessage("本应用缺少必要权限。请点击\"设置\"-\"权限\"-打开所需权限。");

        // 拒绝, 退出应用
        builder.setNegativeButton("取消",
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        finish();
                    }
                });

        builder.setPositiveButton("设置",
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        //进入应用设置
                        Intent intent = new Intent(
                                Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                        intent.setData(Uri.parse("package:" + MainActivity.this.getPackageName()));
                        MainActivity.this.startActivityForResult(intent, SETTING_REQUESTCODE);
                    }
                });
        builder.setCancelable(false);
        builder.show();
    }