Android 用代理模式处理海量高频数据更新

核心提示：cancel();}}public void startTimer(){refreshHandler.getHandler().postDelayed(this,DELAY_ONCE);}private void sendMsg(final int currColor){final Runnable myUpdateR

cancel();

}

}

public void startTimer(){

refreshHandler.getHandler().postDelayed(this,DELAY_ONCE);

}

private void sendMsg(final int currColor){

final Runnable myUpdateResults = new Runnable() {

public void run() {

refreshHandler.updateBackground( id, currColor);

}

};

new Thread() {

public void run() {

refreshHandler.getHandler().post(myUpdateResults);

}

}.start();

}

public void stopTimer(){

this.cancel();

}

}

Java代码

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.view.View;

import android.widget.TextView;

public class TestActivity extends Activity implements RefreshHandlerInterface{

private Handler _messageHandler = new Handler();

@Override

public Handler getHandler() {

return _messageHandler;

}

@Override

public void updateBackground(Object handlerId, int color) {

if(!( handlerId instanceof CommonDefn.DoThingsReturn)) {

return; //invalid parameter

}

else {

TextView current = (TextView)(((CommonDefn.DoThingsReturn)handlerId).data);

if(current.getVisibility() != View.VISIBLE) {

return; //no need to update for the view

}

if(color<=0) {

current.setBackgroundDrawable(null);

current.setText(((CommonDefn.DoThingsReturn)handlerId).cmd.toString());

}

else {

current.setBackgroundColor( color);

}

current.postInvalidate();

}

}

/** Called when the activity is first created. */

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