handler thread

handler thread

package com.example.handlerdemo; import java.util.Date; import android.os.Bundle; import android.os.Handler; import android.app.Activity; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; public class MainActivity extends Activity { Handler handler; Button start,end; TextView tv; Runnable r; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tv=(TextView)this.findViewById(R.id.textView1); start=(Button)this.findViewById(R.id.start); end=(Button)this.findViewById(R.id.end); handler=new Handler(); r = new Runnable(){ @Override public void run(){ tv.setText(new Date().toString()); handler.postDelayed(r, 1000); } }; start.setOnClickListener(new OnClickListener() { @Override public void onClick(View v){ handler.post(r); } }); end.setOnClickListener(new OnClickListener(){ @Override public void onClick(View v){ handler.removeCallbacks(r); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }

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