Android - 获取控件（包括状态栏与标题栏）宽高 - android

        //------------------------------------------------方法一        int w = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);        int h = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);        imageView.measure(w, h);        int height =imageView.getMeasuredHeight();        int width =imageView.getMeasuredWidth();        textView.append("\n"+height+","+width);                                //-----------------------------------------------方法二        ViewTreeObserver vto = imageView.getViewTreeObserver();        vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {            public boolean onPreDraw() {                int height = imageView.getMeasuredHeight();                int width = imageView.getMeasuredWidth();                textView.append("\n"+height+","+width);                return true;            }        });        //-----------------------------------------------方法三           ViewTreeObserver vto2 = imageView.getViewTreeObserver();          vto2.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {            @Override              public void onGlobalLayout() {                imageView.getViewTreeObserver().removeGlobalOnLayoutListener(this);                  textView.append("\n\n"+imageView.getHeight()+","+imageView.getWidth());            }          });

方法一: 比其他的两个方法多了一次计算,也就是多调用了一次onMeasure()方法,该方法虽然看上去简单,但是如果要目标控件计算耗时比较大的话(如listView等),不建议使用.

方法二,它的回调方法会调用很多次,并且滑动TextView的时候任然会调用,所以不建议使用.

方法三,比较合适.

当然,实际应用的时候需要根据实际情况而定.

from:http://blog.csdn.net/johnny901114/article/details/7839512

获取状态条高度

在源码程序中代码：

height= getResources().getDimensionPixelSize(com.android.internal.R.dimen.status_bar_height);

通过SDK反射获取代码：

class c = Class.forName("com.android.internal.R$dimen");Object obj = c.newInstance();Field field = c.getField("status_bar_height");int x = Integer.parseInt(field.get(obj).toString());int y = getResources().getDimensionPixelSize(x);

标题栏的高度：

240x320的高度为20px

320x480的高度为25px

480x800的高度为38px

@Override    public void onWindowFocusChanged(boolean hasFocus) {        super.onWindowFocusChanged(hasFocus);        Rect rect = new Rect();        Window win = getWindow();        win.getDecorView().getWindowVisibleDisplayFrame(rect);        //状态栏高度        int statusBarHeight = rect.top;         //状态栏与标题栏高度总和        int contentViewTop = win.findViewById(Window.ID_ANDROID_CONTENT).getTop();         int titleBarHeight = contentViewTop - statusBarHeight;         Log.d("状态栏高度：" + statusBarHeight);        Log.d("标题栏高度：" + titleBarHeight);    }

Android - 获取控件（包括状态栏与标题栏）宽高

更多相关文章

随机推荐