我有两个方法来得到真正的解决方案：

I have two approaches to get real resolution:

    DisplayMetrics dm = new DisplayMetrics(); 
    getWindowManager().getDefaultDisplay().getMetrics(dm);
    device_value[index++] = dm.widthPixels + "x" + m.heightPixels;

    Display display = getWindowManager().getDefaultDisplay();
    String widthAndHeight = display.getWidth() + " x " + display.getHeight();

<uses-sdk android:minSdkVersion="3"  android:targetSdkVersion="3"/>
<supports-screens android:anyDensity="false" android:smallScreens="true" android:normalScreens="true" android:largeScreens="true"/>

它们都返回320x569，而真正的是640×960。

Both of them return "320x569" while the real one is "640x960".

推荐答案

结论如何获得真正的解决方案：

Conclusion about how to get real resolution:

< uses-sdk android:targetSdkVersion="4"...

< supports-screens android:anyDensity="true"...

DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
String resolution = dm.widthPixels + "x" + m.heightPixels;