logcat日志輸出信息：
10-25 05:05:41.737 28659-28659/net.chiangfai I/dalvikvm: Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.widget.ResourcesWrapper.getDrawable 10-25 05:05:41.737 28659-28659/net.chiangfai W/dalvikvm: VFY: unable to resolve virtual method 702: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable; 10-25 05:05:41.737 28659-28659/net.chiangfai D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002 10-25 05:05:41.737 28659-28659/net.chiangfai I/dalvikvm: Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.widget.ResourcesWrapper.getDrawableForDensity 10-25 05:05:41.737 28659-28659/net.chiangfai W/dalvikvm: VFY: unable to resolve virtual method 704: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable; 10-25 05:05:41.737 28659-28659/net.chiangfai D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002 10-25 05:05:41.745 28659-28659/net.chiangfai E/dalvikvm: Could not find class 'android.graphics.drawable.RippleDrawable', referenced from method android.support.v7.widget.AppCompatImageHelper.hasOverlappingRendering
原因：出現以上情況，是因為代碼所調用的一些方法只能在較高的API level（高於minSdkVersion）上使用，而調試用的機子或模擬器所用的SDK Version小於該API level
解決來源：http://blog.csdn.net/jiawei6212130/article/details/52302432