安卓6.0以上动态权限申请封装

安卓在6.0之前所有权限只需要在AndroidManifest.xml配置好即可，但是安卓6.0之后就需要使用动态权限了，必须用户自己点击了同意后才会拥有这个权限。下面是别人封装的一个权限工具类。

package com.example.update_next;

import android.app.Activity;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.os.Build;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.core.app.ActivityCompat;

/**
 * @author Admin
 * @version $Rev$
 * @des ${TODO}
 * @updateAuthor $Author$
 * @updateDes ${TODO}
 */
public class BaseActivity extends Activity {
    //**************** Android M Permission (Android 6.0权限控制代码封装)
    private int permissionRequestCode = 88;
    private PermissionCallback permissionRunnable;

    public interface PermissionCallback {
        void hasPermission();

        void noPermission();
    }

    /**
     * Android M运行时权限请求封装
     *
     * @param permissionDes 权限描述
     * @param runnable      请求权限回调
     * @param permissions   请求的权限（数组类型），直接从Manifest中读取相应的值，比如Manifest.permission.WRITE_CONTACTS
     */
    public void performCodeWithPermission(@NonNull String permissionDes, PermissionCallback runnable, @NonNull String... permissions) {
        if (permissions == null || permissions.length == 0)
            return;
        //        this.permissionrequestCode = requestCode;
        this.permissionRunnable = runnable;
        if ((Build.VERSION.SDK_INT < Build.VERSION_CODES.M) || checkPermissionGranted(permissions)) {
            if (permissionRunnable != null) {
                permissionRunnable.hasPermission();
                permissionRunnable = null;
            }
        } else {
            //permission has not been granted.
            requestPermission(permissionDes, permissionRequestCode, permissions);
        }

    }

    private boolean checkPermissionGranted(String[] permissions) {
        boolean flag = true;
        for (String p : permissions) {
            if (ActivityCompat.checkSelfPermission(this, p) != PackageManager.PERMISSION_GRANTED) {
                flag = false;
                break;
            }
        }
        return flag;
    }

    private void requestPermission(String permissionDes, final int requestCode, final String[] permissions) {
        if (shouldShowRequestPermissionRationale(permissions)) {
            /*1. 第一次请求权限时，用户拒绝了，下一次：shouldShowRequestPermissionRationale()  返回 true，应该显示一些为什么需要这个权限的说明
            2.第二次请求权限时，用户拒绝了，并选择了“不在提醒”的选项时：shouldShowRequestPermissionRationale()  返回 false
            3. 设备的策略禁止当前应用获取这个权限的授权：shouldShowRequestPermissionRationale()  返回 false*/
            // Provide an additional rationale to the user if the permission was not granted
            // and the user would benefit from additional context for the use of the permission.
            // For example, if the request has been denied previously.

            //            Snackbar.make(getWindow().getDecorView(), requestName,
            //                    Snackbar.LENGTH_INDEFINITE)
            //                    .setAction(R.string.common_ok, new View.OnClickListener() {
            //                        @Override
            //                        public void onClick(View view) {
            //                            ActivityCompat.requestPermissions(BaseAppCompatActivity.this,
            //                                    permissions,
            //                                    requestCode);
            //                        }
            //                    })
            //                    .show();
            //如果用户之前拒绝过此权限，再提示一次准备授权相关权限
            new AlertDialog.Builder(this)
                    .setTitle("提示")
                    .setMessage(permissionDes)
                    .setPositiveButton("授权", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            ActivityCompat.requestPermissions(BaseActivity.this, permissions, requestCode);
                        }
                    }).show();

        } else {
            // Contact permissions have not been granted yet. Request them directly.
            ActivityCompat.requestPermissions(BaseActivity.this, permissions, requestCode);
        }
    }

    private boolean shouldShowRequestPermissionRationale(String[] permissions) {
        boolean flag = false;
        for (String p : permissions) {
            if (ActivityCompat.shouldShowRequestPermissionRationale(this, p)) {
                flag = true;
                break;
            }
        }
        return flag;
    }

    /**
     * Callback received when a permissions request has been completed.
     */
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        if (requestCode == permissionRequestCode) {
            if (verifyPermissions(grantResults)) {
                if (permissionRunnable != null) {
                    permissionRunnable.hasPermission();
                    permissionRunnable = null;
                }
            } else {
                Toast.makeText(this, "暂无权限执行相关操作！", Toast.LENGTH_SHORT).show();
                if (permissionRunnable != null) {
                    permissionRunnable.noPermission();
                    permissionRunnable = null;
                }
            }
        } else {
            super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        }

    }

    public boolean verifyPermissions(int[] grantResults) {
        // At least one result must be checked.
        if (grantResults.length < 1) {
            return false;
        }

        // Verify that each required permission has been granted, otherwise return false.
        for (int result : grantResults) {
            if (result != PackageManager.PERMISSION_GRANTED) {
                return false;
            }
        }
        return true;
    }
    //********************** END Android M Permission ****************************************
}

 

这个是工具类所有的代码了。

下面我会告诉大家怎么使用这个工具类。

首先用你的activity继承这个BaseActivity

然后再加上这一段代码即可。

performCodeWithPermission("这是描述，自己想些啥都可以", new PermissionCallback() {
    @Override
    public void hasPermission() {

    }

    @Override
    public void noPermission() {

    }
}, Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE);

 

 

这是我需要申请的读取和写入外部的权限，你需要什么权限，在这个地方加上就可以了。

到此为止了。后面有工具类的地址，想其实跟代码中一样，想下载给个积分的可以下载看一下，怎么也不会的可以发邮件。