Android开发学习笔记之坐标、截图

获取控件相对于屏幕的坐标

View view = findViewById(R.id.button1);

int[] locations = new int[2];

view.getLocationOnScreen(locations);

int x = locations[0];

int y = locations[1];

截图并保存成png

View view = getLayoutInflater().inflate(R.layout.main, null);

//打开图像缓存

view.setDrawingCacheEnabled(true);

//必须调用measure和layout方法才能成功保存可视组件的截图到png

//测量view的大小

view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),

MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));

//发送位置和尺寸到view及其所有的子view

view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());

try

{

Bitmap bitmap = view.getDrawingCache();

FileOutputStream fos = new FileOutputStream("/sdcard/test.png");

bitmap.compress(CompressFormat.PNG, 100, fos);

fos.close();

}

catch (Exception e)

{

}

//获取屏幕

View ScreenView = getWindow().getDecorView();

该view包括整个屏幕（状态栏和标题栏）。