安卓零碎的知识重点（2）

int width =View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED); 
int height =View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED); 
view.measure(width,height); 
int height=view.getMeasuredHeight(); 
int width=view.getMeasuredWidth();

//添加组件绘制之前的监听
ViewTreeObserver vto =view.getViewTreeObserver(); 
vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() { 
   @Override
    public booleanonPreDraw() { 
       int height =view.getMeasuredHeight(); 
       int width =view.getMeasuredWidth();     
   } 
}); 

//添加总体布局监听
ViewTreeObserver vto = view.getViewTreeObserver();  
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener(){ 
    @Override 
    public voidonGlobalLayout() { 
      view.getViewTreeObserver().removeGlobalOnLayoutListener(this);      
    int height =view.getMeasuredHeight(); 
     int width =view.getMeasuredWidth();  
    }  
});

public class ThreadPoolUtils {

	private ThreadPoolUtils() {
	}

	// 定义核心线程数。并行线程数
	private static int CORE_POOL_SIZE = 3;

	// 线程池最大线程数：除了正在执行的线程额外保存多少个线程
	private static int MAX_POOL_SIZE = 200;

	// 额外线程空暇状态生存时间
	private static int KEEP_ALIVE_TIME = 5000;

	// 堵塞队列。当核心线程队列满了放入的
	// 初始化一个大小为10的泛型为Runnable的队列
	private static BlockingQueue<Runnable> workQueue = new ArrayBlockingQueue<Runnable>(
			10);
	// 线程工厂,把传递进来的runnable对象生成一个Thread
	private static ThreadFactory threadFactory = new ThreadFactory() {

		// 原子型的integer变量生成的integer值不会反复
		private final AtomicInteger ineger = new AtomicInteger();

		@Override
		public Thread newThread(Runnable arg0) {
			return new Thread(arg0, "MyThreadPool thread:"
					+ ineger.getAndIncrement());
		}
	};

	// 当线程池发生异常的时候回调进入
	private static RejectedExecutionHandler handler = new RejectedExecutionHandler() {
		@Override
		public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
			// 进行重新启动操作
		}

	};
	// 线程池ThreadPoolExecutor java自带的线程池
	private static ThreadPoolExecutor threadpool;
	// 静态代码块，在类被载入的时候进入
	static {
		threadpool = new ThreadPoolExecutor(CORE_POOL_SIZE, MAX_POOL_SIZE,
				KEEP_ALIVE_TIME, TimeUnit.SECONDS, workQueue, threadFactory,
				handler);
	}

	public static void execute(Runnable runnable) {
		threadpool.execute(runnable);
	}
}

progressBar = new ProgressBar(getApplicationContext(), null,
				android.R.attr.progressBarStyleHorizontal);
		progressBar.setMax(100);
		// progressBar.setIndeterminate(false);
		// progressBar.setProgressDrawable(getResources().getDrawable(
		// android.R.drawable.progress_horizontal));
		// progressBar.setIndeterminateDrawable(getResources().getDrawable(
		// android.R.drawable.progress_indeterminate_horizontal));
		LayoutParams layoutParams2 = new LayoutParams(LayoutParams.FILL_PARENT,
				LayoutParams.WRAP_CONTENT);
		progressBar.setLayoutParams(layoutParams2);
		progressBar.setPadding(5, 5, 5, 5);
		runBarLayout.addView(progressBar);

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ABCDFF"
    tools:context="com.example.drawtest.MainActivity" >

    <FrameLayout
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#ABFFFF" >

        <Button
            android:id="@+id/button1"
            style="?
android:attr/buttonStyleSmall"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Button" />
    </FrameLayout>

    <fragment
        android:id="@+id/navigation_drawer"
        android:name="com.drawer.test.LeftMenuFrag"
        android:layout_width="200dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        tools:layout="@layout/leftmenu" />

</android.support.v4.widget.DrawerLayout>