一、manifest 注册权限

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="xxxxxxx">

    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.CAMERA"/>
................................

二、代码动态申请权限

多个权限的处理

//需要授权的权限数组
private String[] permissions = {
            Manifest.permission.RECORD_AUDIO
            , Manifest.permission.READ_EXTERNAL_STORAGE
            , Manifest.permission.WRITE_EXTERNAL_STORAGE
            , Manifest.permission.CAMERA
    };
//未被授权的权限集合
private List<String> refusedList;

权限判断

        //当前设备的系统版本>=23
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            for (String permission : permissions) {
                if (ContextCompat.checkSelfPermission(getApplication(), permission)
                        == PackageManager.PERMISSION_DENIED) {
                    if (refusedList == null)
                        refusedList = new ArrayList<>();
                    refusedList.add(permission);
                }
            }
            //当前设备系统版本<23 直接初始化
        } else {
            init();
        }
        //没有被拒绝授权的权限  直接初始化
        if (refusedList == null || refusedList.size() == 0) {
            init();
        } else {
            //请求权限
            ActivityCompat.requestPermissions(this, refusedList.toArray(new String[0]), REQUEST_CODE);
        }

权限申请的结果处理

  @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull @NotNull String[] permissions, @NonNull @NotNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        //清空
        refusedList.clear();
        if (requestCode == REQUEST_CODE) {
            for (int i = 0; i < grantResults.length; i++) {
                if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
                    refusedList.add(permissions[i]);
                }
            }
        }

 if (refusedList.size() == 0) 
            init();
   else
    ActivityCompat.requestPermissions(this, refusedList.toArray(new String[0]), REQUEST_CODE);
}

三、对勾选了“不在询问”的处理

如果用户勾选了“不在询问”的处理

 refusedList.clear();
        //首次授权判断
        if (requestCode == REQUEST_CODE) {
            for (int i = 0; i < grantResults.length; i++) {
                if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
                    refusedList.add(permissions[i]);
                }
            }
        }
        //再次授权判断
        if (requestCode == REQUEST_CODE_02) {
            for (int i = 0; i < grantResults.length; i++) {
                if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
                    refusedList.add(permissions[i]);
                    if (!ActivityCompat.shouldShowRequestPermissionRationale(this, permissions[i])) {
                        AlertDialog dialog;
                        AlertDialog.Builder builder = new AlertDialog.Builder(this);
                        builder.setMessage("有必须权限未被授权，这将影响APP的使用，请手动授权！");
                        builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                dialog.dismiss();
                                //跳转到应用手动授权
                                Intent intent = new Intent();
                                intent.setAction(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                                intent.setData(Uri.parse("package:" + MainActivity.this.getPackageName()));
                                startActivity(intent);
                            }
                        });
                        builder.setNegativeButton("退出", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                dialog.dismiss();
                                System.exit(0);
                            }
                        });
                        dialog = builder.create();
                        dialog.setCancelable(false);
                        dialog.show();
                        return;
                    }
                }
            }
        }

        if (refusedList.size() == 0) {
            init();
        } else {
            ActivityCompat.requestPermissions(this, refusedList.toArray(new String[0]), REQUEST_CODE_02);
        }
}

注意：

houldShowRequestPermissionRationale方法返回值分几种情况：