我為自定義吐司創(chuàng)建了以下方法。public void customToastMessage(String message){ LayoutInflater inf = (LayoutInflater)con.getSystemService(Context.LAYOUT_INFLATER_SERVICE); View layout = inf.inflate(R.layout.custom_toast_layout,(ViewGroup)findViewById(R.id.myCustomToast)); TextView toastMessage = layout.findViewById(R.id.myCustomToastText); toastMessage.setText(message); Toast warningMessage = Toast.makeText(con, message, Toast.LENGTH_LONG); warningMessage.setGravity(Gravity.TOP | Gravity.CENTER_HORIZONTAL, 0, 10); warningMessage.setView(layout); warningMessage.show();}只要這個(gè)方法存在于 MainActivity 中，它就可以正常工作，但是當(dāng)我將它移到一個(gè)單獨(dú)的類時(shí)，我得到：“java.lang.IllegalStateException：無(wú)法在 android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:389) 處執(zhí)行 android:onClick 的方法”。我在下面的課程中需要改變什么？public class MyCustomUI extends AppCompatActivity { private static Context con; public MyCustomUI(Context con){ this.con = con; } public void customToastMessage(String message){ LayoutInflater inf = (LayoutInflater)con.getSystemService(Context.LAYOUT_INFLATER_SERVICE); View layout = inf.inflate(R.layout.custom_toast_layout,(ViewGroup)findViewById(R.id.myCustomToast)); TextView toastMessage = layout.findViewById(R.id.myCustomToastText); toastMessage.setText(message); Toast warningMessage = Toast.makeText(con, message, Toast.LENGTH_LONG); warningMessage.setGravity(Gravity.TOP | Gravity.CENTER_HORIZONTAL, 0, 10); warningMessage.setView(layout); warningMessage.show(); }}
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阿晨1998
TA貢獻(xiàn)2037條經(jīng)驗(yàn) 獲得超6個(gè)贊
我猜你的問題是當(dāng)你膨脹你的布局時(shí)：
視圖布局 = inf.inflate(R.layout.custom_toast_layout,(ViewGroup)findViewById(R.id.myCustomToast));
我也猜測(cè)問題是(ViewGroup)findViewById(R.id.myCustomToast). 您正在嘗試查找該類上不存在但在 MainActivity 上的視圖/視圖組。
將它作為參數(shù)傳遞給您的方法（只是相關(guān)部分）：
public void customToastMessage(String message, ViewGroup customToast){
LayoutInflater inf = (LayoutInflater)con.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = inf.inflate(R.layout.custom_toast_layout, viewgroup);
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