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从Android6.0以后，Android是不会主动获取需要权限，改为了需要提示用户手动获取，系统应用除外。
1. 运行时获得权限:
从androi 6.0开始,不再是安装应用时用户确定获得全部的权限.而是在使用软件过程中需要该权限时,弹出对话框让用户选择权限.不仅如此,用户选择权限后还可以关闭。
2. 检查是否获得权限:
通过 ContextCompat.checkSelfPermission(context,permission)方法,方法返回值为 PackageManager.PERMISSION_GRANTED or PackageManager.PERMISSION_DENIED
int permissionCheck = ContextCompat.checkSelfPermission(this,
Manifest.permission.WRITE_CALENDAR);
if (permissionCheck == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(PermissionActivity.this, "hava this permission", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(PermissionActivity.this, "no this permission", Toast.LENGTH_SHORT).show();
}3. 请求权限:
通过ActivityCompat.requestPermissions(activity,permissions,requestCode)第二个参数是一个String数组,第三个参数是请求码便于在onRequestPermissionsResult 方法中根据requestCode进行判断.
ActivityCompat.requestPermissions(PermissionActivity.this,
new String[]{Manifest.permission.READ_CONTACTS},
MY_PERMISSIONS_REQUEST_READ_CONTACTS);4. 请求权限后的回调:
请求权限后会回调onRequestPermissionsResult方法,在activity中重写onRequestPermissionsResult(requestCode,permissions,grantResults)方法 grantResults是int类型的数组每个值为PackageManager.PERMISSION_GRANTED or PackageManager.PERMISSION_DENIED 分别对应permissions的每个请求。
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
} else {
}
}
}
}5、动态请求权限
//6.0之后要动态获取权限，重要！！！
protected void judgePermission() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
// 检查该权限是否已经获取
// 权限是否已经 授权 GRANTED---授权 DINIED---拒绝
// sd卡权限
String[] SdCardPermission = {Manifest.permission.WRITE_EXTERNAL_STORAGE};
if (ContextCompat.checkSelfPermission(this, SdCardPermission[0]) != PackageManager.PERMISSION_GRANTED) {
// 如果没有授予该权限，就去提示用户请求
ActivityCompat.requestPermissions(this, SdCardPermission, 100);
}
//手机状态权限
String[] readPhoneStatePermission = {Manifest.permission.READ_PHONE_STATE};
if (ContextCompat.checkSelfPermission(this, readPhoneStatePermission[0]) != PackageManager.PERMISSION_GRANTED) {
// 如果没有授予该权限，就去提示用户请求
ActivityCompat.requestPermissions(this, readPhoneStatePermission, 200);
}
//定位权限
String[] locationPermission = {Manifest.permission.ACCESS_FINE_LOCATION};
if (ContextCompat.checkSelfPermission(this, locationPermission[0]) != PackageManager.PERMISSION_GRANTED) {
// 如果没有授予该权限，就去提示用户请求
ActivityCompat.requestPermissions(this, locationPermission, 300);
}
String[] ACCESS_COARSE_LOCATION = {Manifest.permission.ACCESS_COARSE_LOCATION};
if (ContextCompat.checkSelfPermission(this, ACCESS_COARSE_LOCATION[0]) != PackageManager.PERMISSION_GRANTED) {
// 如果没有授予该权限，就去提示用户请求
ActivityCompat.requestPermissions(this, ACCESS_COARSE_LOCATION, 400);
}
String[] READ_EXTERNAL_STORAGE = {Manifest.permission.READ_EXTERNAL_STORAGE};
if (ContextCompat.checkSelfPermission(this, READ_EXTERNAL_STORAGE[0]) != PackageManager.PERMISSION_GRANTED) {
// 如果没有授予该权限，就去提示用户请求
ActivityCompat.requestPermissions(this, READ_EXTERNAL_STORAGE, 500);
}
String[] WRITE_EXTERNAL_STORAGE = {Manifest.permission.WRITE_EXTERNAL_STORAGE};
if (ContextCompat.checkSelfPermission(this, WRITE_EXTERNAL_STORAGE[0]) != PackageManager.PERMISSION_GRANTED) {
// 如果没有授予该权限，就去提示用户请求
ActivityCompat.requestPermissions(this, WRITE_EXTERNAL_STORAGE, 600);
}
}else{
//doSdCardResult();
}
//LocationClient.reStart();
}本文摘抄如下
1、android6.0运行时权限详解 [直通车]
2、Android动态获取权限（读写、获取手机状态、定位）[直通车]
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