Question

我想要验证EditTextPreference。这意味着如果验证失败，我将不得不阻止对话框关闭。我设置了自己的点击监听器，但在解除对话框时没有保存首选项 - 可能是因为不再从对话框构建器处理点击：

public class CustomDialog extends EditTextPreference {

    public CustomDialog(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void showDialog(final Bundle state) {
        super.showDialog(state);
        final AlertDialog d = (AlertDialog) getDialog();
        d.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // Dismiss
            }
        });
    }

    @Override
    public void onClick(DialogInterface dialog, int which) {
        super.onClick(dialog, which);
    }
}

我是否只需手动提交首选项？

编辑：以下是XML：

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" android:title="android custom prefs test">
    <com.nerth.vixin.CustomDialog android:defaultValue="@string/address" android:title="IP Address" android:key="key_1"/>
</PreferenceScreen>

Answer 1

知道了！感谢kha有关onBindDialogView的提示：

public class CustomDialog extends EditTextPreference {

    public CustomDialog(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void showDialog(final Bundle state) {
        super.showDialog(state);
        final AlertDialog d = (AlertDialog) getDialog();
        d.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                persistString("Default");
                // Use whatever checks before calling dismiss
                d.dismiss();
            }
        });
    }

    @Override
    protected void onBindDialogView(View view) {
        setText(getPersistedString("Default"));
        super.onBindDialogView(view);
    }

}

Answer 2

 @Override
 protected void onPrepareDialogBuilder(Builder builder){
 super.onPrepareDialogBuilder(builder)
 builder.setCancelable(false)
 }

在对话框中处理好后保存首选项

2 个答案: