strings.xml 및 onClick 메서드의 색상이 변경됩니다.

Question

안녕하세요 this is my strings.xml.

<item><font color ="red">mnasekundę</font></item> 

나는 빨간색으로 항목의 색상을 변경,하지만 불행히도 로그 캣는 말 : java.lang.IllegalStateException가 : 안드로이드에 대한 방법을 실행할 수 없습니다 : 온 클릭 그리고 이것은 내 OnCick 방법 :

public void konwertuj(View view) { 

    if (fromEditText.getText().toString().length() < 1) { 
     Toast.makeText(GlownaPredkosc.this, "Musisz wpisać dowolną liczbę", Toast.LENGTH_LONG).show(); 
    } else { 

     // Get the string from the Spinners and number from the EditText 

     String fromString = (String) fromSpinner.getSelectedItem(); 
     String toString = (String) toSpinner.getSelectedItem(); 
     double input = Double.valueOf(fromEditText.getText().toString()); 

     // Convert the strings to something in our Unit enu, 
     KonwerterPredkosc.Jednostka fromJednostka = KonwerterPredkosc.Jednostka.fromString(fromString); 
     KonwerterPredkosc.Jednostka toJednostka = KonwerterPredkosc.Jednostka.fromString(toString); 

     // Create a converter object and convert! 
     KonwerterPredkosc konwerter = new KonwerterPredkosc(fromJednostka, toJednostka); 
     double result = konwerter.convert(input); 
     toEditText.setText(String.valueOf(result)); 
    } 

추 신 : 글꼴 색이 검은 색이면 모든 것이 잘 작동합니다.

전체 출력을 읽기위한

감사 :

java.lang.IllegalStateException: Could not execute method for android:onClick 
                     at android.view.View$DeclaredOnClickListener.onClick(View.java:4452) 
                     at android.view.View.performClick(View.java:5198) 
                     at android.view.View$PerformClick.run(View.java:21147) 
                     at android.os.Handler.handleCallback(Handler.java:739) 
                     at android.os.Handler.dispatchMessage(Handler.java:95) 
                     at android.os.Looper.loop(Looper.java:148) 
                     at android.app.ActivityThread.main(ActivityThread.java:5417) 
                     at java.lang.reflect.Method.invoke(Native Method) 
                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
                    Caused by: java.lang.reflect.InvocationTargetException 
                     at java.lang.reflect.Method.invoke(Native Method) 
                     at android.view.View$DeclaredOnClickListener.onClick(View.java:4447) 
                     at android.view.View.performClick(View.java:5198) 
                     at android.view.View$PerformClick.run(View.java:21147) 
                     at android.os.Handler.handleCallback(Handler.java:739) 
                     at android.os.Handler.dispatchMessage(Handler.java:95) 
                     at android.os.Looper.loop(Looper.java:148) 
                     at android.app.ActivityThread.main(ActivityThread.java:5417) 
                     at java.lang.reflect.Method.invoke(Native Method) 
                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
                    Caused by: java.lang.ClassCastException: android.text.SpannedString cannot be cast to java.lang.String 
                     at com.example.barto.konwerter2.GlownaPredkosc.konwertuj(GlownaPredkosc.java:73) 
                     at java.lang.reflect.Method.invoke(Native Method) 
                     at android.view.View$DeclaredOnClickListener.onClick(View.java:4447) 
                     at android.view.View.performClick(View.java:5198) 
                     at android.view.View$PerformClick.run(View.java:21147) 
                     at android.os.Handler.handleCallback(Handler.java:739) 
                     at android.os.Handler.dispatchMessage(Handler.java:95) 
                     at android.os.Looper.loop(Looper.java:148) 
                     at android.app.ActivityThread.main(ActivityThread.java:5417) 
                     at java.lang.reflect.Method.invoke(Native Method) 

Answer 1

이 시도 : toEditText.setTextColor(this.getResources().getColor(R.color.red)); .XML에서 아무것도 변경하지 않고.