在我的项目中,我试图创建一个音频按钮,就像一个使用whatsap的音频按钮,当您按住开始录制和放下停止录制时,我发现了解决方案,他使用了2个按钮,一个开始并一个完成。我需要的是在按下和释放时使用相同的按钮执行代码。我没有找到要捕获的事件的任何实现。你能帮我吗? 这是我在axml文件中的按钮
<android.support.design.widget.FloatingActionButton
android:id="@+id/btn_record"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|right"
android:src="@drawable/ic_micro"
android:layout_marginRight="15dp"
android:layout_marginBottom="15dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:theme="@style/ControlsTheme"
local:MvxBind="Click RecordAudioClick; Visibility Visibility(RecordAudioVisibility); Touch Touch" />
这是我在viewmodel中的代码
public MvxCommand Touch
{
get
{
return new MvxCommand(() =>
{
UserDialogs.Instance.Toast(new ToastConfig(Pressed Button")
.SetDuration(3000)
.SetMessageTextColor(System.Drawing.Color.White)
.SetBackgroundColor(System.Drawing.Color.Black)
.SetPosition(ToastPosition.Top));
});
}
}
答案 0 :(得分:1)
在Android上,您可以订阅Touch
事件:
button.Touch += OnButtonTouch;
private void OnButtonTouch(object sender, View.TouchEventArgs args)
{
var handled = false;
if (args.Event.Action == MotionEventActions.Down)
{
// do stuff when pressed
handled = true;
}
else if (args.Event.Action == MotionEventActions.Cancel ||
args.Event.Action == MotionEventActions.Up)
{
// do stuff when released
handled = true;
}
args.Handled = handled;
}
在iOS上,这段代码有点类似:
button.TouchDown += OnButtonTouchDown;
button.TouchUpInside += OnButtonTouchUpInside;
private void OnButtonTouchDown(object sender, EventArgs e)
{
// do stuff when pressed
}
private void OnButtonTouchUpInside(object sender, EventArgs e)
{
// do stuff when released
}