NetActivity.java example

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AndroidProjectStroe-master
package com.hjdz.install;

import java.util.HashMap;

import org.apache.http.Header;

import com.hjdz.install.util.HttpUtils;
import com.hjdz.install.util.NetUtils;
import com.linshao.http.AsyncHttpResponseHandler;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.os.Bundle;
import android.provider.Settings;
import android.view.View;
import android.widget.Toast;

@SuppressLint("ShowToast")
public abstract class NetActivity extends Activity implements
		android.view.View.OnClickListener {

	protected ProgressDialog dialog;
	private Context mContext;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		mContext = this;
		dialog = new ProgressDialog(this);
		dialog.setCancelable(false);
		dialog.setMessage("正在请求，请稍候...");
		dialog.setCanceledOnTouchOutside(false);
		dialog.setOnCancelListener(new OnCancelListener() {

			@Override
			public void onCancel(DialogInterface dialog) {
				HttpUtils.canclePost();
				Toast.makeText(mContext, "请求取消", 300).show();
			}
		});
	}

	/**
	 * 网络请求
	 * 
	 * @param url
	 * @param params
	 * @param TAG
	 */
	protected void asynNet(final String url,
			final HashMap<String, String> params, final int TAG) {
		if (!NetUtils.isNetworkConnected(mContext)) {
			new AlertDialog.Builder(NetActivity.this).setTitle("提醒")
					.setMessage("网络未连接，请设置后重试").setCancelable(false)
					.setPositiveButton("设置", new OnClickListener() {

						@Override
						public void onClick(DialogInterface dialog, int which) {
							startActivity(new Intent(
									Settings.ACTION_WIRELESS_SETTINGS));// 进入无线网络配置界面
						}
					}).create().show();
		} else {
			HttpUtils.post(url, params, new AsyncHttpResponseHandler() {
				@Override
				public void onStart() {
					super.onStart();
					dialog.show();
				}

				@Override
				public void onSuccess(int arg0, Header[] arg1, byte[] arg2) {
					dialog.dismiss();
					success(new String(arg2), TAG);
				}

				@Override
				public void onFailure(int arg0, Header[] arg1, byte[] arg2,
						Throwable arg3) {
					failure(TAG);
					dialog.dismiss();
					new AlertDialog.Builder(mContext).setTitle("请求错误")
							.setMessage("服务器错误或连接失败，请重试").setCancelable(false)
							.setPositiveButton("重新请求", new OnClickListener() {

								@Override
								public void onClick(DialogInterface dialog,
										int which) {
									asynNet(url, params, TAG);
								}
							}).setNegativeButton("返回", new OnClickListener() {

								@Override
								public void onClick(DialogInterface dialog,
										int which) {
									NetActivity.this.finish();
								}
							}).create().show();
				}
			});
		}
	}

	public void failure(int tag) {

	}

	public abstract void success(String result, int tag);

	public abstract void onclick(View v);

	@Override
	public void onClick(View v) {
		onclick(v);
	}
}