摘要： ADrawableis a pluggable drawing container that is usually associated with a View. For instance, aBitmapDrawableis used to display images, aShapeDrawableto draw shapes and gradients, and so on. You can even combine them to create complex renderings.As a matter of fact, they are so convenient that mos 阅读全文

摘要： 1.Setting the minSdkVersion设置最小支持的sdk<manifest> ... <uses-sdkandroid:minSdkVersion="3"/> ... </manifest>2.Using reflection使用反射检测要 使用的类 在当前运行环境下 是否有需要调用的属性或方法。likeandroid.os.Debug.dumpHprofData(String filename). TheDebugclass has existed since Android 1.0, but the method i 阅读全文