Android 运行时权限工具类
经常写Android运行时权限申请代码,每次都是复制过来之后,改一下权限字符串就用,把代码搞得乱糟糟的,于是便有了封装工具类的想法,话不多说,先看怎么用:
工具类及Demo:github
PermissionUtils.checkAndRequestPermission(mContext, PERMISSION_CAMERA, REQUEST_CODE_CAMERA,
new PermissionUtils.PermissionRequestSuccessCallBack() {
@Override
public void onHasPermission() {
// 权限已被授予
toCamera();
}
});
if(PermissionUtils.isPermissionRequestSuccess(grantResults))
{
// 权限申请成功
toCamera();
}
PermissionUtils.checkAndRequestMorePermissions(mContext, PERMISSIONS, REQUEST_CODE_PERMISSIONS,
new PermissionUtils.PermissionRequestSuccessCallBack() {
@Override
public void onHasPermission() {
// 权限已被授予
toCamera();
}
});
- 第一次申请权限:按照正常流程走;
- 如果用户第一次拒绝了权限申请,第二次申请时应向用户解释权限用途;
- 如果用户勾选了“不再询问”选项,应引导用户去设置页手动开启权限。
于是,引申出了复杂版的权限申请方法:
PermissionUtils.checkPermission(mContext, PERMISSION_CAMERA,
new PermissionUtils.PermissionCheckCallBack() {
@Override
public void onHasPermission() {
// 已授予权限
toCamera();
}
@Override
public void onUserHasAlreadyTurnedDown(String... permission) {
// 上一次申请权限被拒绝,可用于向用户说明权限原因,然后调用权限申请方法。
}
@Override
public void onUserHasAlreadyTurnedDownAndDontAsk(String... permission) {
// 第一次申请权限或被禁止申请权限,建议直接调用申请权限方法。
}
});
PermissionUtils.onRequestPermissionResult(mContext, PERMISSION_CAMERA, grantResults, new PermissionUtils.PermissionCheckCallBack() {
@Override
public void onHasPermission() {
toCamera();
}
@Override
public void onUserHasAlreadyTurnedDown(String... permission) {
Toast.makeText(mContext, "我们需要"+Arrays.toString(permission)+"权限", Toast.LENGTH_SHORT).show();
}
@Override
public void onUserHasAlreadyTurnedDownAndDontAsk(String... permission) {
Toast.makeText(mContext, "我们需要"+Arrays.toString(permission)+"权限", Toast.LENGTH_SHORT).show();
// 显示前往设置页的dialog
showToAppSettingDialog();
}
});
基本使用就是这些了,包括前往应用设置页的方法,也在工具类里面,具体使用可以看demo。
工具类及Demo:github
贴一下工具类代码:
package com.fadai.library;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import java.util.ArrayList;
import java.util.List;
/**
* <pre>
* author : FaDai
* e-mail : [email protected]
* time : 2017/06/13
* desc : xxxx描述
* version: 1.0
* </pre>
*/
public class PermissionUtils {
/**
* 检测权限
*
* @return true:已授权; false:未授权;
*/
public static boolean checkPermission(Context context, String permission) {
if (ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED)
return true;
else
return false;
}
/**
* 检测多个权限
*
* @return 未授权的权限
*/
public static List<String> checkMorePermissions(Context context, String[] permissions) {
List<String> permissionList = new ArrayList<>();
for (int i = 0; i < permissions.length; i++) {
if (!checkPermission(context, permissions[i]))
permissionList.add(permissions[i]);
}
return permissionList;
}
/**
* 请求权限
*/
public static void requestPermission(Context context, String permission, int requestCode) {
ActivityCompat.requestPermissions((Activity) context, new String[]{permission}, requestCode);
}
/**
* 请求多个权限
*/
public static void requestMorePermissions(Context context, List permissionList, int requestCode) {
String[] permissions = (String[]) permissionList.toArray(new String[permissionList.size()]);
requestMorePermissions(context, permissions, requestCode);
}
/**
* 请求多个权限
*/
public static void requestMorePermissions(Context context, String[] permissions, int requestCode) {
ActivityCompat.requestPermissions((Activity) context, permissions, requestCode);
}
/**
* 判断是否已拒绝过权限
*
* @return
* @describe :如果应用之前请求过此权限但用户拒绝,此方法将返回 true;
* -----------如果应用第一次请求权限或 用户在过去拒绝了权限请求,
* -----------并在权限请求系统对话框中选择了 Don't ask again 选项,此方法将返回 false。
*/
public static boolean judgePermission(Context context, String permission) {
if (ActivityCompat.shouldShowRequestPermissionRationale((Activity) context, permission))
return true;
else
return false;
}
/**
* 检测权限并请求权限:如果没有权限,则请求权限
*/
public static void checkAndRequestPermission(Context context, String permission, int requestCode) {
if (!checkPermission(context, permission)) {
requestPermission(context, permission, requestCode);
}
}
/**
* 检测并请求多个权限
*/
public static void checkAndRequestMorePermissions(Context context, String[] permissions, int requestCode) {
List<String> permissionList = checkMorePermissions(context, permissions);
requestMorePermissions(context, permissionList, requestCode);
}
/**
* 检测权限
*
* @describe:具体实现由回调接口决定
*/
public static void checkPermission(Context context, String permission, PermissionCheckCallBack callBack) {
if (checkPermission(context, permission)) { // 用户已授予权限
callBack.onHasPermission();
} else {
if (judgePermission(context, permission)) // 用户之前已拒绝过权限申请
callBack.onUserHasAlreadyTurnedDown(permission);
else // 用户之前已拒绝并勾选了不在询问、用户第一次申请权限。
callBack.onUserHasAlreadyTurnedDownAndDontAsk(permission);
}
}
/**
* 检测多个权限
*
* @describe:具体实现由回调接口决定
*/
public static void checkMorePermissions(Context context, String[] permissions, PermissionCheckCallBack callBack) {
List<String> permissionList = checkMorePermissions(context, permissions);
if (permissionList.size() == 0) { // 用户已授予权限
callBack.onHasPermission();
} else {
boolean isFirst = true;
for (int i = 0; i < permissionList.size(); i++) {
String permission = permissionList.get(i);
if (judgePermission(context, permission)) {
isFirst = false;
break;
}
}
String[] unauthorizedMorePermissions = (String[]) permissionList.toArray(new String[permissionList.size()]);
if (isFirst)// 用户之前已拒绝过权限申请
callBack.onUserHasAlreadyTurnedDownAndDontAsk(unauthorizedMorePermissions);
else // 用户之前已拒绝并勾选了不在询问、用户第一次申请权限。
callBack.onUserHasAlreadyTurnedDown(unauthorizedMorePermissions);
}
}
/**
* 检测并申请权限
*/
public static void checkAndRequestPermission(Context context, String permission, int requestCode, PermissionRequestSuccessCallBack callBack) {
if (checkPermission(context, permission)) {// 用户已授予权限
callBack.onHasPermission();
} else {
requestPermission(context, permission, requestCode);
}
}
/**
* 检测并申请多个权限
*/
public static void checkAndRequestMorePermissions(Context context, String[] permissions, int requestCode, PermissionRequestSuccessCallBack callBack) {
List<String> permissionList = checkMorePermissions(context, permissions);
if (permissionList.size() == 0) { // 用户已授予权限
callBack.onHasPermission();
} else {
requestMorePermissions(context, permissionList, requestCode);
}
}
/**
* 判断权限是否申请成功
*/
public static boolean isPermissionRequestSuccess(int[] grantResults) {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED)
return true;
else
return false;
}
/**
* 用户申请权限返回
*/
public static void onRequestPermissionResult(Context context, String permission, int[] grantResults, PermissionCheckCallBack callback) {
if (PermissionUtils.isPermissionRequestSuccess(grantResults)) {
callback.onHasPermission();
} else {
if (PermissionUtils.judgePermission(context, permission)) {
callback.onUserHasAlreadyTurnedDown(permission);
} else {
callback.onUserHasAlreadyTurnedDownAndDontAsk(permission);
}
}
}
/**
* 用户申请多个权限返回
*/
public static void onRequestMorePermissionsResult(Context context, String[] permissions, PermissionCheckCallBack callback) {
boolean isBannedPermission = false;
List<String> permissionList = checkMorePermissions(context, permissions);
if (permissionList.size() == 0)
callback.onHasPermission();
else {
for (int i = 0; i < permissionList.size(); i++) {
if (!judgePermission(context, permissionList.get(i))) {
isBannedPermission = true;
break;
}
}
// 已禁止再次询问权限
if (isBannedPermission)
callback.onUserHasAlreadyTurnedDownAndDontAsk(permissions);
else // 拒绝权限
callback.onUserHasAlreadyTurnedDown(permissions);
}
}
/**
* 跳转到权限设置界面
*/
public static void toAppSetting(Context context) {
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (Build.VERSION.SDK_INT >= 9) {
intent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
intent.setData(Uri.fromParts("package", context.getPackageName(), null));
} else if (Build.VERSION.SDK_INT <= 8) {
intent.setAction(Intent.ACTION_VIEW);
intent.setClassName("com.android.settings", "com.android.settings.InstalledAppDetails");
intent.putExtra("com.android.settings.ApplicationPkgName", context.getPackageName());
}
context.startActivity(intent);
}
public interface PermissionRequestSuccessCallBack {
/**
* 用户已授予权限
*/
void onHasPermission();
}
public interface PermissionCheckCallBack {
/**
* 用户已授予权限
*/
void onHasPermission();
/**
* 用户已拒绝过权限
*
* @param permission:被拒绝的权限
*/
void onUserHasAlreadyTurnedDown(String... permission);
/**
* 用户已拒绝过并且已勾选不再询问选项、用户第一次申请权限;
*
* @param permission:被拒绝的权限
*/
void onUserHasAlreadyTurnedDownAndDontAsk(String... permission);
}
}
工具类及Demo:github
详细使用建议clone代码看一下,第一次封装工具类,如果问题,请指教,谢谢