<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <!-- ACCESS_FINE_LOCATION:允许一个程序访问精确位置(如GPS) -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /><!-- ACCESS_COARSE_LOCATION:允许一个程序访问CellID或WiFi热点来获取大致的位置 -->
/**
* 解决:无法发现蓝牙设备的问题
*
* 对于发现新设备这个功能, 还需另外两个权限(Android M 以上版本需要显式获取授权,附授权代码):
*/
private final int ACCESS_LOCATION=1;
@SuppressLint("WrongConstant")
private void getPermission() {
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M) {
int permissionCheck = 0;
permissionCheck = this.checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION);
permissionCheck += this.checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION);
if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
//未获得权限
this.requestPermissions( // 请求授权
new String[]{Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION},
ACCESS_LOCATION);// 自定义常量,任意整型
}
}
}
/**
* 请求权限的结果回调。每次调用 requestpermissions(string[],int)时都会调用此方法。
* @param requestCode 传入的请求代码
* @param permissions 传入permissions的要求
* @param grantResults 相应权限的授予结果:PERMISSION_GRANTED 或 PERMISSION_DENIED
*/
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case ACCESS_LOCATION:
if (hasAllPermissionGranted(grantResults)) {
Log.i(TAG, "onRequestPermissionsResult: 用户允许权限");
} else {
Log.i(TAG, "onRequestPermissionsResult: 拒绝搜索设备权限");
}
break;
}
}
private boolean hasAllPermissionGranted(int[] grantResults) {
for (int grantResult : grantResults) {
if (grantResult == PackageManager.PERMISSION_DENIED) {
return false;
}
}
return true;
}