Android 安卓PopUpWindow

我有一个应用程序，它有一个创建曲面视图的活动，在曲面视图中放置一个OpenGL渲染器。我在OpenGL渲染器中处理对象拾取。我想做的是当用户选择一个特定的对象时，显示一个文本块和一个我存储在文件中的图像。Android的PopupWindow类似乎可以很好地完成这一任务。我能在OpenGL渲染器上覆盖弹出窗口吗？还是我在倒退

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谢谢

好吧，我的朋友，我和你有同样的问题。我将解释我做了什么，我认为这符合你的问题

我有一个显示网格的渲染器。用户可以在网格上放置注释。我也像你一样做光线拾取。当用户单击注释时，将显示一个弹出窗口

本质上，您需要做的是在渲染器中调用一个方法，该方法将在UI线程中运行弹出窗口。（OpenGl在自己的线程上运行）

更具体地说，您必须向将显示弹出窗口的处理程序发送消息

YourRenderer.java

@Override
public void onDrawFrame(GL10 gl) {
    .... code that displays the mesh ...

    if(userRequestedPopup) {
        Message message = new Message();
        message.what = DialogHandler.OPEN_ANNOTATION;

        // Here you can create a Bundle in order to pass more data inside the Message

        dialogHanlder.sendMessage(message);

        userRequestedPopup = false;
    }
....
}

public Popup(Context context, Message message) {
    this.context = context;
    Activity parent = (Activity) context;

    // here you can have the instance of the holder from glSurfaceView
    LinearLayout parentLayout = (LinearLayout) parent.findViewById(R.id.popupHolder);

    // inflate your custom popup layout or create it dynamically 
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view =  inflater.inflate(R.layout.popup_layout, null);

    // Now you should create a PopupWindow
    PopupWindow popupWindow = new PopupWindow(view, 
               LayoutParams.WRAP_CONTENT,  
               LayoutParams.WRAP_CONTENT);
    // you can change the offset values or the Gravity. This will diaply the popup in the center
    // of your glSurfaceView
    popupWindow.showAtLocation(parentLayout, Gravity.CENTER, 0, 0);
}

YourGLSurfaceView.java您应该在这里创建处理程序

public class DialogHandler extends Handler {
    ... other constants ...
    public static final int OPEN_ANNOTATION = 2;
    ...

    @Override
    public void handleMessage(Message msg) {
        if (msg.what == OPEN_ANNOTATION) {
            new YourPopup(context, msg);
        } 
    }
}

在创建弹出窗口之前，您应该用xml设计自己的布局（如果需要，也可以通过编程方式创建）。为了理解代码，我应该提到我调用我的布局

popup\u layout

。 此外，您应该向glsurfaceview的布局中添加一个空布局（它应该在宽度和高度上填充父布局），比如说一个线性布局，它将容纳弹出窗口。我称之为

popumpoolder

YourPopup.java

@Override
public void onDrawFrame(GL10 gl) {
    .... code that displays the mesh ...

    if(userRequestedPopup) {
        Message message = new Message();
        message.what = DialogHandler.OPEN_ANNOTATION;

        // Here you can create a Bundle in order to pass more data inside the Message

        dialogHanlder.sendMessage(message);

        userRequestedPopup = false;
    }
....
}

public Popup(Context context, Message message) {
    this.context = context;
    Activity parent = (Activity) context;

    // here you can have the instance of the holder from glSurfaceView
    LinearLayout parentLayout = (LinearLayout) parent.findViewById(R.id.popupHolder);

    // inflate your custom popup layout or create it dynamically 
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view =  inflater.inflate(R.layout.popup_layout, null);

    // Now you should create a PopupWindow
    PopupWindow popupWindow = new PopupWindow(view, 
               LayoutParams.WRAP_CONTENT,  
               LayoutParams.WRAP_CONTENT);
    // you can change the offset values or the Gravity. This will diaply the popup in the center
    // of your glSurfaceView
    popupWindow.showAtLocation(parentLayout, Gravity.CENTER, 0, 0);
}

我想这就是你需要的，因为这个解决方案对我来说很好

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希望我能帮助…

为弹出窗口创建一个XML，然后在Java文件中使用以下代码：

public void popupWindow() {
    PopupWindow pw;
    LayoutInflater inflater = (LayoutInflater) MainActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    View layout = inflater.inflate(R.layout.popup_window, (ViewGroup) findViewById(R.id.txtPusdNotR));

    pw = new PopupWindow(layout, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, true);
    pw.showAtLocation(layout, Gravity.CENTER, 0, 0);

    // Get your Buttons and other tags here

}