请求6.0以上手机的读写文件、相机权限，可根据需要自己添加
private static final int REQUEST_PERMISSIONS = 1000;
private void requestPermissons(){
String[] permissions= new String[]{
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.READ_EXTERNAL_STORAGE,//文件读写
Manifest.permission.CAMERA,//相机
Manifest.permission.RECORD_AUDIO//音频
};
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)!= PackageManager.PERMISSION_GRANTED){
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)){
Toast.makeText(this, "用户曾拒绝xxxx", Toast.LENGTH_SHORT).show();
}else {
ActivityCompat.requestPermissions(this, permissions, REQUEST_PERMISSIONS);
}
}
}