RequestCallbackWrapper.java

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package com.netease.nimlib.sdk;

import com.netease.nimlib.log.NimLog;

/**
 * RequestCallback的一个包裹类，将3个结果的调用转到一个接口上，以供上层调用者精简代码，不必每次调用都需要实现3个接口。<br>
 *     对应到原来的3个接口，参数分别为：<br>
 *     onSuccess(T result) -&gt; onResult(ResponseCode.RES_SUCCESS, result, null)<br>
 *     onFailed(int code) -&gt; onResult(code, null, null)<br>
 *     onException(Throwable exception) -&gt; onResult(ResponseCode.RES_EXCEPTION, null, exception)<br>
 */
public abstract class RequestCallbackWrapper<T> implements RequestCallback<T> {

    private static final String TAG = "RequestCallbackWrapper";

    /**
     * 调用结果回调函数
     * @param code
     * @param result
     * @param exception
     */
    public abstract void onResult(int code, T result, Throwable exception);

    @Override
    public void onSuccess(T result) {
        try {
            onResult(ResponseCode.RES_SUCCESS, result, null);
        } catch (Throwable throwable) {
            NimLog.e(TAG, "catch in onSuccess:" + result, throwable);
        }
    }

    @Override
    public void onFailed(int code) {
        try {
            onResult(code, null, null);
        } catch (Throwable throwable) {
            NimLog.e(TAG, "catch in onFailed:" + code, throwable);
        }
    }

    @Override
    public void onException(Throwable exception) {
        try {
            exception.printStackTrace();
            onResult(ResponseCode.RES_EXCEPTION, null, exception);
        } catch (Throwable throwable) {
            NimLog.e(TAG, "catch in onException:" + exception, throwable);
        }
    }
}