微信給的示例，HelloWeixin@Android

package?net.sourceforge.simcpux.wxapi;


import?com.tencent.mm.sdk.openapi.BaseReq;
import?com.tencent.mm.sdk.openapi.BaseResp;
import?com.tencent.mm.sdk.openapi.ConstantsAPI;
import?com.tencent.mm.sdk.openapi.ShowMessageFromWX;
import?com.tencent.mm.sdk.openapi.IWXAPI;
import?com.tencent.mm.sdk.openapi.IWXAPIEventHandler;
import?com.tencent.mm.sdk.openapi.WXAPIFactory;
import?com.tencent.mm.sdk.openapi.WXAppExtendObject;
import?com.tencent.mm.sdk.openapi.WXMediaMessage;

import?net.sourceforge.simcpux.Constants;
import?net.sourceforge.simcpux.GetFromWXActivity;
import?net.sourceforge.simcpux.SendToWXActivity;
import?net.sourceforge.simcpux.ShowFromWXActivity;
import?net.sourceforge.simcpux.R;

import?android.app.Activity;
import?android.content.Intent;
import?android.os.Bundle;
import?android.view.View;
import?android.widget.Button;
import?android.widget.Toast;

public?class?WXEntryActivity?extends?Activity?implements?IWXAPIEventHandler{
	
	private?static?final?int?TIMELINE_SUPPORTED_VERSION?=?0x21020001;
	
	private?Button?gotoBtn,?regBtn,?launchBtn,?checkBtn;
	
	//?IWXAPI?是第三方app和微信通信的openapi接口
????private?IWXAPI?api;
	
????@Override
????public?void?onCreate(Bundle?savedInstanceState)?{
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.entry);
????????
????????//?通過WXAPIFactory工廠，獲取IWXAPI的實例
????	api?=?WXAPIFactory.createWXAPI(this,?Constants.APP_ID,?false);

????	regBtn?=?(Button)?findViewById(R.id.reg_btn);
????	regBtn.setOnClickListener(new?View.OnClickListener()?{
			
			@Override
			public?void?onClick(View?v)?{
				//?將該app注冊到微信
			????api.registerApp(Constants.APP_ID);????	
			}
		});
????	
????????gotoBtn?=?(Button)?findViewById(R.id.goto_send_btn);
????????gotoBtn.setOnClickListener(new?View.OnClickListener()?{
			
			@Override
			public?void?onClick(View?v)?{
		????????startActivity(new?Intent(WXEntryActivity.this,?SendToWXActivity.class));
		????????finish();
			}
		});
????????
????????launchBtn?=?(Button)?findViewById(R.id.launch_wx_btn);
????????launchBtn.setOnClickListener(new?View.OnClickListener()?{
			
			@Override
			public?void?onClick(View?v)?{
				Toast.makeText(WXEntryActivity.this,?"launch?result?=?"?+?api.openWXApp(),?Toast.LENGTH_LONG).show();
			}
		});
????????
????????checkBtn?=?(Button)?findViewById(R.id.check_timeline_supported_btn);
????????checkBtn.setOnClickListener(new?View.OnClickListener()?{
			
			@Override
			public?void?onClick(View?v)?{
				int?wxSdkVersion?=?api.getWXAppSupportAPI();
				if?(wxSdkVersion?>=?TIMELINE_SUPPORTED_VERSION)?{
					Toast.makeText(WXEntryActivity.this,?"wxSdkVersion?=?"?+?Integer.toHexString(wxSdkVersion)?+?"\ntimeline?supported",?Toast.LENGTH_LONG).show();
				}?else?{
					Toast.makeText(WXEntryActivity.this,?"wxSdkVersion?=?"?+?Integer.toHexString(wxSdkVersion)?+?"\ntimeline?not?supported",?Toast.LENGTH_LONG).show();
				}
			}
		});
????????
????????api.handleIntent(getIntent(),?this);
????}

	@Override
	protected?void?onNewIntent(Intent?intent)?{
		super.onNewIntent(intent);
		
		setIntent(intent);
????????api.handleIntent(intent,?this);
	}

	//?微信發送請求到第三方應用時，會回調到該方法
	@Override
	public?void?onReq(BaseReq?req)?{
		switch?(req.getType())?{
		case?ConstantsAPI.COMMAND_GETMESSAGE_FROM_WX:
			goToGetMsg();		
			break;
		case?ConstantsAPI.COMMAND_SHOWMESSAGE_FROM_WX:
			goToShowMsg((ShowMessageFromWX.Req)?req);
			break;
		default:
			break;
		}
	}

	//?第三方應用發送到微信的請求處理后的響應結果，會回調到該方法
	@Override
	public?void?onResp(BaseResp?resp)?{
		int?result?=?0;
		
		switch?(resp.errCode)?{
		case?BaseResp.ErrCode.ERR_OK:
			result?=?R.string.errcode_success;
			break;
		case?BaseResp.ErrCode.ERR_USER_CANCEL:
			result?=?R.string.errcode_cancel;
			break;
		case?BaseResp.ErrCode.ERR_AUTH_DENIED:
			result?=?R.string.errcode_deny;
			break;
		default:
			result?=?R.string.errcode_unknown;
			break;
		}
		
		Toast.makeText(this,?result,?Toast.LENGTH_LONG).show();
	}
	
	private?void?goToGetMsg()?{
		Intent?intent?=?new?Intent(this,?GetFromWXActivity.class);
		intent.putExtras(getIntent());
		startActivity(intent);
		finish();
	}
	
	private?void?goToShowMsg(ShowMessageFromWX.Req?showReq)?{
		WXMediaMessage?wxMsg?=?showReq.message;		
		WXAppExtendObject?obj?=?(WXAppExtendObject)?wxMsg.mediaObject;
		
		StringBuffer?msg?=?new?StringBuffer();?//?組織一個待顯示的消息內容
		msg.append("description:?");
		msg.append(wxMsg.description);
		msg.append("\n");
		msg.append("extInfo:?");
		msg.append(obj.extInfo);
		msg.append("\n");
		msg.append("filePath:?");
		msg.append(obj.filePath);
		
		Intent?intent?=?new?Intent(this,?ShowFromWXActivity.class);
		intent.putExtra(Constants.ShowMsgActivity.STitle,?wxMsg.title);
		intent.putExtra(Constants.ShowMsgActivity.SMessage,?msg.toString());
		intent.putExtra(Constants.ShowMsgActivity.BAThumbData,?wxMsg.thumbData);
		startActivity(intent);
		finish();
	}
}