高密度屏幕上的模糊文本

You should read this guide

Basically, if you want support 1.5 devices you should build your project against SDK >= 1.6 with the minSdkVersion setted to 3:

<uses-sdk
        android:minSdkVersion="3"
        android:targetSdkVersion="4"
    />

On this way you will be able to have differents drawable resources for differents 屏幕尺寸/密度不打破与Android 1.5的可压缩性 假设所有屏幕都是“MDP”。 obviously you can't use any api released after sdk version 3