public class MyClass {
    public MyClass(Context context) {
		mContext = context;
	}
    OnLoadFinishedListener onloadfinishedlistener;
    // 提供接口
	public interface OnLoadFinishedListener {
		void onLoadFinish();
		void onLoadFailed();
	}
	public void setOnDataFinishedListener(OnLoadFinishedListener onloadfinishedlistener) {
		this.onloadfinishedlistener = onloadfinishedlistener;
	}
    //將上面代碼復制到你的類(lèi)中，在需要的地方插入加載完畢，或者加載失敗的方法即可
    //onloadfinishedlistener.onLoadFinish
    //onloadfinishedlistener.onLoadFailed
}

調用方法

//主線(xiàn)程中異步回調方法
MyClass c =new MyClass(this);
c.setOnDataFinishedListener(new OnLoadFinishedListener() {
			@Override
			public void onLoadFinish() {
				// 加載完畢
			}
			@Override
			public void onLoadFailed() {
				// 加載失敗
			}
		});