TaskException.java

package org.aisen.android.network.task;

import android.content.res.Resources;
import android.text.TextUtils;

import org.aisen.android.R;
import org.aisen.android.common.context.GlobalContext;

/**
 * 应用的异常申明<br/>
 * 1、包含四种基本环境类型错误申明<br/>
 * 2、业务类型异常，如果没有设置msg字段，请初始化Declare获取msg信息
 *
 */
public class TaskException extends Exception {

	private static final long serialVersionUID = -6262214243381380676L;

	public enum TaskError {
		// 网络错误
		failIOError,
		// 无网络链接
		noneNetwork, 
		// 连接超时
		timeout, 
		// 响应超时
		socketTimeout,
		// 返回数据不合法
		resultIllegal
	}
	
	private String code;

    private String msg = "";
	
	private static IExceptionDeclare exceptionDeclare;
	
	public TaskException(String code) {
		this.code = code;
	}

    public TaskException(String code, String msg) {
        this(code);
        this.msg = msg;
    }

    public String getCode() {
        return code;
    }

	@Override
	public String getMessage() {
        if (!TextUtils.isEmpty(msg))
            return msg + "";

		if (!TextUtils.isEmpty(code) && exceptionDeclare != null) {
			String msg = exceptionDeclare.checkCode(code);
			if (!TextUtils.isEmpty(msg)) {
				return msg + "";
			}
		}

        try {
			if (GlobalContext.getInstance() != null) {
				Resources res = GlobalContext.getInstance().getResources();

				TaskError error = TaskError.valueOf(code);
				if (error == TaskError.noneNetwork || error == TaskError.failIOError)
					msg = res.getString(R.string.comm_error_none_network);
				else if (error == TaskError.socketTimeout || error == TaskError.timeout)
					msg = res.getString(R.string.comm_error_timeout);
				else if (error == TaskError.resultIllegal)
					msg = res.getString(R.string.comm_error_result_illegal);
				if (!TextUtils.isEmpty(msg))
					return msg + "";
			}
        } catch (Exception e) {
        }

		return super.getMessage() + "";
	}
	
	public static void config(IExceptionDeclare declare) {
		TaskException.exceptionDeclare = declare;
	}

	public static void checkResponse(String response) throws TaskException {
		if (TaskException.exceptionDeclare != null)
			TaskException.exceptionDeclare.checkResponse(response);
	}

}