我正在尝试使用 GradientDrawable 设置背景。一切正常，除了背景出现明显的条纹。我试图启用抖动，但它并没有变得更好。这是一个屏幕截图：
从编码的角度来看，我这样做了：
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/* Deal with gradient banding */
getWindow().setFormat(PixelFormat.RGBA_8888);
setContentView(R.layout.activity_main);
}
/* Another attempt to deal with the banding */
@Override
public void onAttachedToWindow() {
super.onAttachedToWindow();
Window window = getWindow();
window.setFormat(PixelFormat.RGBA_8888);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
最后，XML 文件：
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:background="@drawable/background"
tools:context=".MainActivity" >
</RelativeLayout>
可绘制/背景.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<gradient
android:angle="90"
android:startColor="#999"
android:endColor="#fff"
android:type="linear"
android:dither="true"
/>
</shape>
有什么办法可以让这看起来更好吗？谢谢！