Posted January 1, 20205 yr Hi, I am trying to use the Checkbox. The MC implementation of the checkbox doesnt have a feature to save the current state if the checkbox is clicked. Therefore I added the save feature by extending the Checkbox class. Here you can see the source code: GuiCheckBox: Spoiler public class GuiCheckBox extends CheckboxWidget { private final CheckBoxOption option; private final IConfig config; public GuiCheckBox(int x, int y, int width, int height, String message, CheckBoxOption option, IConfig config) { super(x, y, width, height, message, option.isChecked()); this.option = option; this.config = config; } @Override public void onPress() { super.onPress(); option.setChecked(super.isChecked()); config.save(); } } The CheckBoxOption is a field inside the config class to provide easy access to a setting. CheckBoxOption: Spoiler public class CheckBoxOption { @Getter @Setter private boolean checked = true; public CheckBoxOption() { } public CheckBoxOption(boolean checked) { this.checked = checked; } } The Config is a simple class to store settings. IConfig: Spoiler public interface IConfig { public String getFileName(); public void save(); } And the initialization of a GuiCheckbox: Spoiler private final Config cfg; ... GuiCheckBox showChunk = new GuiCheckBox(leftColumn, posY, 50, 20, I18n.translate("settings.chunk"), cfg.getShowChunk(), cfg); addButton(showChunk); There is no compile error, but if I open the Screen with the GuiCheckbox, the game is crashing and I get an error message which I do not understand: Spoiler [21:55:31] [main/FATAL]: Unreported exception thrown! java.lang.VerifyError: Bad type on operand stack Exception Details: Location: de/d4n1el89/chunkinfo/GuiConfig.init()V @59: invokevirtual Reason: Type 'de/d4n1el89/modutils/gui/GuiCheckBox' (current frame, stack[1]) is not assignable to 'net/minecraft/client/gui/widget/AbstractButtonWidget' Current Frame: bci: @59 flags: { } locals: { 'de/d4n1el89/chunkinfo/GuiConfig', integer, integer, integer, 'de/d4n1el89/modutils/gui/GuiCheckBox' } stack: { 'de/d4n1el89/chunkinfo/GuiConfig', 'de/d4n1el89/modutils/gui/GuiCheckBox' } Bytecode: 0x0000000: ....... To fix the error I found a trivial solution, but its blowing up my code... Spoiler CheckboxWidget showChunk = new CheckboxWidget(leftColumn, posY, 50, 20, I18n.translate("settings.chunk"), cfg.getShowChunk().isChecked()) { @Override public void onPress() { super.onPress(); cfg.getShowChunk().setChecked(super.isChecked()); cfg.save(); } }; addButton(showChunk); Hence I want a better solution or fix the error above. Any ideas? Edited January 1, 20205 yr by badner
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