对于多线程我们已经有了些许认识，现在就对其进一步的学习应用吧。

把它用在android中实现标题的更换（3秒更换一次）：

只需要编写Activity实现即可，这里有两种方法，可以根据自己习惯选择使用（个人较喜欢第一种）：

（1）Runnable：

public class MainActivity extends Activity {
	private int count = 1;
	private Handler handler = new Handler() {
		public void handleMessage(android.os.Message msg) {
			switch (msg.what) {
			case 1:
				updateTitle();
				break;
			default:
				break;
			}

		}
	};

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		new Thread(new TitleThread()).start();
	}

	protected void updateTitle() {
		setTitle("my bolg" + count++);

	}

	class TitleThread implements Runnable {

		@Override
		public void run() {

			while (true) {
				Message message = new Message();
				message.what = 1;
				handler.sendMessage(message);
				try {
					Thread.sleep(3000);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}

		}
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.activity_main, menu);
		return true;
	}

}

（2）Timer：

public class TimerActivity extends Activity {
	private int count=1;
	private Handler handler=new Handler(){
		public void handleMessage(android.os.Message msg){
			switch(msg.what){
			case 1:
				updateTitle();
				break;
			default:
				break;
			
			}
			
		}
	};

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_timer);
        Timer timer=new Timer();
		timer.scheduleAtFixedRate(new TimerTask() {
			
			@Override
			public void run() {
				Message message=new Message();
				message.what=1;
				handler.sendMessage(message);
			}
		}, 1000,3000);
    }

    protected void updateTitle() {
		setTitle("hello"+(count++));
		
	}

	@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_timer, menu);
        return true;
    }

    
}

是不是很简单，你喜欢哪一种呢？快试试吧！

快速创建多个 页表

 使用QStackedWidget 添加页， 页上在添加表

	SE_Browser = new QStackedWidget(m_SE);
	SE_Browser->setObjectName(QString::fromUtf8("SE_Browser"));
	SE_Browser->setGeometry(QRect(0, 65, 641, 401));

for(j = 1;j <= get_page_count+1;j++)
			{
				SE_P[order][j] = new QWidget();
				SE_Browser->addWidget(SE_P[order][j]);

				SE_Table[order][j] = new QTableWidget(SE_P[order][j]);
				SE_Table[order][j]->setGeometry(2,0,620,400);
				SE_Table[order][j]->setFrameShape(QFrame::NoFrame);  //璁剧疆杈规
				SE_Table[order][j]->setAutoScroll(false);
				SE_Table[order][j]->setShowGrid(true);
				SE_Table[order][j]->setColumnCount(3);// 设为 3 列
				SE_Table[order][j]->setMouseTracking(true);
				SE_Table[order][j]->verticalHeader()->setDefaultSectionSize(48);
				SE_Table[order][j]->setSelectionMode(QAbstractItemView::SingleSelection); 
				SE_Table[order][j]->setSelectionBehavior(QAbstractItemView::SelectRows); 
				SE_Table[order][j]->setShowGrid(false);   
				SE_Table[order][j]->setFont(TableFont_Normal);   
				SE_Table[order][j]->setColumnWidth(0,75);// 设置列宽
				SE_Table[order][j]->setColumnWidth(1,470);// 设置列宽
				SE_Table[order][j]->setColumnWidth(2,80);// 设置列宽
				SE_Table[order][j]->setFont(TableFont_Normal);
				SE_Table[order][j]->verticalHeader()->setVisible(false);// 隐藏 表头
				SE_Table[order][j]->horizontalHeader()->setVisible(false);//隐藏 表头
				SE_Table[order][j]->setEditTriggers ( QAbstractItemView::NoEditTriggers );
				connect(SE_Table[order][j],SIGNAL(cellClicked(int,int)),this,SLOT(SE_clicked(int,int)));
			}

快速刷新所有空表内容

	for(i = 0;i< (count - SE_page_count*8);i++){
		for(j = 0;j < 3;j++){
			comp_one = show_Comp_info[SE_page_count*8+i+1].one;//  所刷新的 内容数据链表
			comp_two = show_Comp_info[SE_page_count*8+i+1].two;//  所刷新的 内容数据链表
			comp_three = show_Comp_info[SE_page_count*8+i+1].three;//  所刷新的 内容数据链表

			if(j==0)
				SE_Table[order][SE_page_count+1]->setItem(i,j,new QTableWidgetItem(comp_one));
			if(j==1)
				SE_Table[order][SE_page_count+1]->setItem(i,j,new QTableWidgetItem(comp_two));
			if(j==2)
				SE_Table[order][SE_page_count+1]->setItem(i,j,new QTableWidgetItem(comp_three));
		}
	}

       在使用下拉刷新类库EGORefreshTableHeaderView的时候，将资源文件添加到工程中，但是忘记假如QuartzCore.framework框架，造成编译错误：

Undefined symbols for architecture i386:

  "_CATransform3DMakeRotation", referenced from:

      -[EGORefreshTableHeaderView setState:] in EGORefreshTableHeaderView-6F75314CE1079327.o

  "_OBJC_CLASS_$_CALayer", referenced from:

      objc-class-ref in EGORefreshTableHeaderView-6F75314CE1079327.o

  "_OBJC_CLASS_$_CATransaction", referenced from:

      objc-class-ref in EGORefreshTableHeaderView-6F75314CE1079327.o

  "_CATransform3DIdentity", referenced from:

      -[EGORefreshTableHeaderView setState:] in EGORefreshTableHeaderView-6F75314CE1079327.o

  "_kCAGravityResizeAspect", referenced from:

      -[EGORefreshTableHeaderView initWithFrame:arrowImageName:textColor:] in EGORefreshTableHeaderView-6F75314CE1079327.o

  "_kCATransactionDisableActions", referenced from:

      -[EGORefreshTableHeaderView setState:] in EGORefreshTableHeaderView-6F75314CE1079327.o

ld: symbol(s) not found for architecture i386

clang: error: linker command failed with exit code 1 (use -v to see invocation)

解决方法：targets——>build phases——>link binary with libraries——>QuartzCore.framework

当添加其他类库的时候也可能因为没有添加framework或者是它们依赖的库同样也会出现这样错误。