我正在嘗試從隨機調色板中獲取按鈕的當前背景顏色。但是，當我嘗試以下代碼時，我的應用程式總是崩潰。
int activeColor = ((ColorDrawable)color1.getBackground()).getColor();
我總是收到此錯誤訊息。
Process: com.boredgiant.chora, PID: 17418
java.lang.ClassCastException: android.graphics.drawable.RippleDrawable cannot be cast to android.graphics.drawable.ColorDrawable
at com.boredgiant.chora.DrawActivity$103.onClick(DrawActivity.java:850)
at android.view.View.performClick(View.java:6314)
at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:1119)
at android.view.View$PerformClick.run(View.java:24793)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6543)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:440)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:810)
uj5u.com熱心網友回復：
您需要將其轉換為 RippleDrawable
int activeColor = ((RippleDrawable)color1.getBackground()).getColorStateList().getDefaultColor();
轉載請註明出處，本文鏈接：https://www.uj5u.com/qianduan/365644.html