Fatal Exception: String cannot be discarded in Spannable

Question

My application works very well, with the exception of a few devices. On one of these devices, I get FATAL EXCEPTION in one of my actions. Error java.lang.ClassCastException: java.lang.String could not be added to android.text.Spannable ...... in android.widget.TextView.setEnabled (TextView. Java: 1432)

STACK TRACE

05-02 09:18:19.917: E/AndroidRuntime(20587): FATAL EXCEPTION: main 05-02 09:18:19.917: E/AndroidRuntime(20587): java.lang.ClassCastException: java.lang.String cannot be cast to android.text.Spannable 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.widget.TextView.setEnabled(TextView.java:1432) 05-02 09:18:19.917: E/AndroidRuntime(20587): at com.myapp.android.menu.LoginFragment.checkIfAnyFieldIsEmpty(LoginFragment.java:512) 05-02 09:18:19.917: E/AndroidRuntime(20587): at com.myapp.android.menu.LoginFragment.onCreateView(LoginFragment.java:183) 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1460) 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:911) 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088) 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682) 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444) 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:429) 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.os.Handler.handleCallback(Handler.java:615) 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.os.Handler.dispatchMessage(Handler.java:92) 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.os.Looper.loop(Looper.java:137) 05-02 09:18:19.917: E/AndroidRuntime(20587): at android.app.ActivityThread.main(ActivityThread.java:4962) 05-02 09:18:19.917: E/AndroidRuntime(20587): at java.lang.reflect.Method.invokeNative(Native Method) 05-02 09:18:19.917: E/AndroidRuntime(20587): at java.lang.reflect.Method.invoke(Method.java:511) 05-02 09:18:19.917: E/AndroidRuntime(20587): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004) 05-02 09:18:19.917: E/AndroidRuntime(20587): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771) 05-02 09:18:19.917: E/AndroidRuntime(20587): at dalvik.system.NativeStart.main(Native Method) 

Here are the pieces of code surrounding the error.

XML LAYOUT CODE

 <com.myapp.android.view.StyledButton android:id="@+id/login_sign_in" style="@style/button_blue" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="@drawable/state_list_login" android:textColor="@color/white" android:imeOptions="actionDone" android:padding="10dp" android:text="@string/sign_in" /> 

KUSTOM BUTTON JAVA KEYBOARD

 public class StyledButton extends Button { //variables private final String BOLD = "fonts/arial.ttf"; private final String NORMAL = "fonts/arial_bold.ttf"; private String mCustomFont = null; /** * Constructor * @param context */ public StyledButton(Context context) { super(context); } /** * Constructor * @param context * @param attrs */ public StyledButton(Context context, AttributeSet attrs) { super(context, attrs); setCustomAttributes(attrs); } /** * Set custom attributes * @param attrs */ private void setCustomAttributes(AttributeSet attrs) { TypedArray a=getContext().obtainStyledAttributes(attrs,R.styleable.StyledTextView); mCustomFont = a.getString(R.styleable.StyledTextView_fontAsset); if(mCustomFont != null) { if(!isInEditMode()) { CustomFontManager fontManager = CustomFontManager.getInstance(); super.setTypeface(fontManager.getFont(getContext().getAssets(), mCustomFont)); } } a.recycle(); } /** * Set type face */ public void setTypeface(Typeface tf, int style) { CustomFontManager fontManager = CustomFontManager.getInstance(); if(isInEditMode()) { super.setTypeface(tf,style); return; } if(mCustomFont!=null) { super.setTypeface(fontManager.getFont(getContext().getAssets(), mCustomFont)); return; } switch (style) { case Typeface.NORMAL: super.setTypeface(fontManager.getFont(getContext().getAssets(), NORMAL)); break; case Typeface.BOLD: super.setTypeface(fontManager.getFont(getContext().getAssets(), BOLD)); break; default: super.setTypeface(fontManager.getFont(getContext().getAssets(), NORMAL)); break; } } 

}

ERROR REASON FOR JAVA CODE

  private StyledButton mSignIn; public void checkIfAnyFieldIsEmpty() { if (mEmailEmpty || mPasswordEmpty) { mSignIn.setEnabled(false); } else { mSignIn.setEnabled(true); } } 

Error string mSignIn.setEnabled (false) . If I comment on this or simply replace it so that both if and else read mSignIn.setEnabled (true), the application works fine.

Yet again. The code how works fine on most devices.

Answer 1

it looks like i was calling android: imeOptions = "actionDone" in the xml layout file. I deleted it and it no longer crashed.

why?

Answer 2

Have you created your style button as irreplaceable? For example, a TextView should look like this:

TextView.setText ("Hai", TextView.BufferType.SPANNABLE);

Answer 3

It may be a bit late, but make sure the text in the TextView you are trying to cover is not set to "" . For some reason, empty lines are not supported.