小编Mr.*_*. T的帖子

我有以下内容TestActivity：

public class TestActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);   
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            Button button = new Button(this);
            button.setBackground(getPressedColorRippleDrawable(Color.RED, Color.BLACK));
        }
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public static RippleDrawable getPressedColorRippleDrawable(int normalColor, int pressedColor) {
        return new RippleDrawable(ColorStateList.valueOf(pressedColor), getColorDrawableFromColor(normalColor), getColorDrawableFromColor(normalColor));
    }

    public static ColorDrawable getColorDrawableFromColor(int color) {
        return new ColorDrawable(color);
    }
}

这段程式码在Lollipop装置上运作良好，但在较旧的Android API上，即使Application建立，我也会收到以下例外讯息：

E/AndroidRuntime: FATAL EXCEPTION: main
 java.lang.VerifyError: TestActivity
     at java.lang.Class.newInstanceImpl(Native Method)
     at java.lang.Class.newInstance(Class.java:1215)
     at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2255)
     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
     at android.app.ActivityThread.access$800(ActivityThread.java:151)
     at …