一、Android现在申请权限比较麻烦,在github查找到一个比较好用的库:AndPermission
依赖:
implementation 'com.yanzhenjie:permission:2.0.0-rc4'
在Fragment中要加上下面的语句,Activity中则可以省略,但我处理方式是都加上了,本身就是一个父类的重写方法,activity中用不用看自己。
// 在Fragment中这句话不能注释,否则Fragment接收不到获取权限的通知。 super.onRequestPermissionsResult(requestCode,permissions,grantResults);
具体实现参考:https://blog.csdn.net/yanzhenjie1003/article/details/52503533
依赖:
//RxPermissions compile 'com.tbruyelle.rxpermissions2:rxpermissions:0.9.4@aar' //RxJava2 compile "io.reactivex.rxjava2:rxjava:2.0.0"
申请单个权限:
RxPermissions rxPermissions = new RxPermissions(MainActivity.this); rxPermissions.request(Manifest.permission.READ_EXTERNAL_STORAGE) .subscribe(new Observer<Boolean>() { @Override public void onSubscribe(Disposable d) { Toast.makeText(MainActivity.this, "应用需要读写权限", Toast.LENGTH_SHORT).show(); } @Override public void onNext(Boolean value) { if(value){ Toast.makeText(MainActivity.this, "同意权限", Toast.LENGTH_SHORT).show(); }else { Toast.makeText(MainActivity.this, "拒绝权限", Toast.LENGTH_SHORT).show(); } } @Override public void onError(Throwable e) { } @Override public void onComplete() { } });
同时申请多个权限并且分别判断权限是否授予:
RxPermissions rxPermission = new RxPermissions(getActivity()); rxPermission .requestEach(Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_CALENDAR, Manifest.permission.READ_CALL_LOG, Manifest.permission.READ_CONTACTS, Manifest.permission.READ_PHONE_STATE, Manifest.permission.READ_SMS, Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA, Manifest.permission.CALL_PHONE, Manifest.permission.SEND_SMS) .subscribe(new Consumer<Permission>() { @Override public void accept(Permission permission) throws Exception { if (permission.granted) { // 用户已经同意该权限 Log.d(TAG, permission.name + " is granted."); } else if (permission.shouldShowRequestPermissionRationale) { // 用户拒绝了该权限,没有选中『不再询问』(Never ask again),那么下次再次启动时,还会提示请求权限的对话框 Log.d(TAG, permission.name + " is denied. More info should be provided."); } else { // 用户拒绝了该权限,并且选中『不再询问』 Log.d(TAG, permission.name + " is denied."); } } });
总起来说,第二个库更加方便简明,建议使用。