如何在Android应用程序中对齐中心时查找图像视图的高度和宽度? [英] how to find the height and width of the image view when it is aligned center in android app?
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问题描述
这是我的代码片段
<?xml version =1.0encoding =utf-8? >
< FrameLayout xmlns:android =http://schemas.android.com/apk/res/android
android:id =@ + id / framelayouts
android:layout_width =fill_parent
android:layout_height =fill_parent
android:layout_gravity =center
>
< ImageView
android:id =@ + id / imageviews
android:layout_width =fill_parent
android:layout_height =fill_parent
android:layout_gravity =center
android:src =@ drawable / ic_launcher/>
< / FrameLayout>
现在可以在中央取得图片。
问题:
这里问题是我得到一些未使用的空间顶部和底部,
解决方案
private void getImageViewDimension(){
// TODO自动生成方法存根
new Handler()。postDelayed(new Runnable(){
@Override
public void run(){
int actualImgWidth = mDeviceWidth - mImgView.getX();
int actualImgHeight = mDeviceHeight - mImgView.getY();
Toast.makeText(getApplicationContext(),actualImgWidth,actualImgHeight:+ actualImgWidth +,+ actualImgHeight,
Toast.LENGTH_SHORT).show();
int宽度= mImgView.getWidth();
int Height = mImgView.getHeight();
}
},10L);
}
Here is my snippet of code
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/framelayouts"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
>
<ImageView
android:id="@+id/imageviews"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:src="@drawable/ic_launcher" />
</FrameLayout>
now am able to get the image at center .
Problem:
Here Problem is i am getting some un used space top and bottom, how can i find the height of the unused space or height of the image or only the imageheight ?
Screenshot:
解决方案
private void getImageViewDimension() {
// TODO Auto-generated method stub
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
int actualImgWidth = mDeviceWidth - mImgView.getX();
int actualImgHeight = mDeviceHeight - mImgView.getY();
Toast.makeText(getApplicationContext(), "actualImgWidth ,actualImgHeight:" +actualImgWidth +","+actualImgHeight ,
Toast.LENGTH_SHORT).show();
int Width = mImgView.getWidth();
int Height = mImgView.getHeight();
}
}, 10L);
}
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