java文件
[java]
package com.example.settitle;

import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends Activity {

private boolean isFinished;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setTitle("窗口标题");
}

public void onClickSetTitle(View view){
setTitle("新窗口标题");
setTitleColor(123456);
}

@Override
protected void onPostCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
Log.d("MainActivity","onPostCreate");
super.onPostCreate(savedInstanceState);
}

@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;
}

@Override
protected void onTitleChanged(CharSequence title, int color) {
// TODO Auto-generated method stub
super.onTitleChanged(title, color);
Log.d("MainActivity","onTitleChangedTitle" + title);
Log.d("MainActivity","onTitleChangedColor" + color);
}

/* @Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
Log.d("onKeyDown",String.valueOf(keyCode));
Log.d("onKeyDown:repeatCount",String.valueOf(event.getRepeatCount()));
if(event.getRepeatCount() == 100){
Toast.makeText(this, "嘻嘻，别总按伦家捏，放开捏", Toast.LENGTH_LONG).show();
}
if(keyCode == KeyEvent.KEYCODE_MENU){
// Toast.makeText(this, "嘻嘻，别总按伦家捏，放开捏", Toast.LENGTH_LONG).show();
Log.d("onKeyDown","You Press MENU down");
}
return super.onKeyDown(keyCode, event);
}*/

/* @Override
public boolean dispatchKeyEvent(KeyEvent event) {
// TODO Auto-generated method stub
if(event.getAction() == KeyEvent.ACTION_DOWN){
Log.d("displatchKeyEvent","down");
}else if(event.getAction() == KeyEvent.ACTION_UP){
Log.d("displatchKeyEvent","up");
}
return super.dispatchKeyEvent(event);
}*/

@Override
public void onBackPressed() {
// TODO Auto-generated method stub
Log.d("onBackPressed","OK");
super.onBackPressed();
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
event.startTracking();
return true;
// return super.onKeyDown(keyCode, event);
}

@Override
protected void onStart() {
// TODO Auto-generated method stub
Toast.makeText(this, "窗口已经恢复", Toast.LENGTH_LONG).show();
super.onStart();
}

@Override
protected void onStop() {
// TODO Auto-generated method stub
if(!isFinished){
Toast.makeText(this, "窗口已经在后台运行(按了HOME键)", Toast.LENGTH_LONG).show();
}
super.onStop();
}

@Override
public void finish() {
// TODO Auto-generated method stub
isFinished = true;
super.finish();
}

@Override
public boolean onKeyLongPress(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
Log.d("onKeyLongPress","onKeyLongPress_KeyCode:"+keyCode);
return super.onKeyLongPress(keyCode, event);
}

/* @Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if(keyCode == KeyEvent.KEYCODE_MENU){
Log.d("onKeyUp","You make MENU up");
}
return super.onKeyUp(keyCode, event);
}*/

}
[/java]
布局文件
[xml]
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="onClickSetTitle"
android:text="设置窗口标题"
/>

</LinearLayout>
[/xml]
setTitleColor虽然可以调用，但是无法修改窗口标题文本颜色，这应该是android的一个bug捏，不过我们可以使用其他更灵活的方法来设置。