allprojects {
		repositories {
			...
			maven { url 'https://www.jitpack.io' }
		}
	     }

dependencies {
	        implementation 'com.github.MiladGe:LoadingDialog:v1.0.5'
	     }

LoadingDailog.Builder loadBuilder=new LoadingDailog.Builder(this)
                .setMessage("加载中...")
                .setCancelable(true)
                .setCancelOutside(true);
        LoadingDailog dialog=loadBuilder.create();
        dialog.show();