解决方法
add：autoDismiss(false)
@H_502_8@new MaterialDialog.Builder(mainActivity)
.title(R.string.title)
.autoDismiss(false)
.content(R.string.content)
.positiveText(R.string.positive)
.negativeText(R.string.negative)
.positiveColor(setColor())
.callback(new MaterialDialog.ButtonCallback() {
@Override
public void onPositive(MaterialDialog dialog) {
}
})
.negativeColor(setColor())
.typeface(titleAndActions,contentAndListItems)
.build()
.show();
