以前获取一个View的宽度和高度,总是在Activity中的onCreate方法中获取不到,那么我们怎么在onCreate方法中获取到控件的宽度和高度呢?
方法:用View中的post方法~
代码如下:
public class MyActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final TextView textView = (TextView) findViewById(R.id.textView);
textView.post(new Runnable() {
@Override
public void run() {
Log.d("xiaoyu","--post--width:"+textView.getWidth());
Log.d("xiaoyu","--post--height:"+textView.getHeight());
}
});
Log.d("xiaoyu","--normal--width:"+textView.getWidth());
Log.d("xiaoyu","--normal--height:"+textView.getHeight());
}
}
布局文件:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff0000">
<TextView
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#ffffff"
android:id="@+id/textView"
android:text="哈哈"/>
</FrameLayout>
05-27 09:39:25.516 29819-29819/com.example.PictureAnimation D/xiaoyu﹕ --normal--width:0
05-27 09:39:25.516 29819-29819/com.example.PictureAnimation D/xiaoyu﹕ --normal--height:0
05-27 09:39:25.576 29819-29819/com.example.PictureAnimation D/xiaoyu﹕ --post--width:720
05-27 09:39:25.580 29819-29819/com.example.PictureAnimation D/xiaoyu﹕ --post--height:100
此方法可以一试!