在Android应用程序中打开弹出窗口时出现异常

Question

我在尝试调用此方法时遇到以下异常。

MessageQueue回调中出现异常：HandlerReceiveCallback 08-21 00:12:43.454 10843-10843/common。以货换货通用域名格式。barterapp E/MessageQueue JNI﹕ Android看法膨胀异常：二进制XML文件行#2：在android上inflating类时出错。看法更平坦。com上的createView（LayoutInflater.java:633）。Android内部的政策impl。电话更平。android上的onCreateView（PhoneLayoutInflater.java:55）。看法更平坦。android上的onCreateView（LayoutInflater.java:682）。看法更平坦。在android上创建ViewFromTag（LayoutInflater.java:741）。看法更平坦。在android上充气（LayoutInflater.java:482）。看法更平坦。在android上充气（LayoutInflater.java:414）。看法更平坦。充气（LayoutInflater.java:365）

public class GlobalHome extends ActionBarActivity{
----------------------
----------------------
private void showLocationPopup() {

    LayoutInflater inflater = (LayoutInflater)
            this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View layout = inflater.inflate(R.layout.popup_location,
            (ViewGroup) findViewById(R.id.layout_location_popup));
    PopupWindow pw = new PopupWindow(
            layout,
            100,
            100,
            true);
    // The code below assumes that the root container has an id called 'main'
    pw.showAtLocation(layout, Gravity.CENTER, 0, 0);

}
}

布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:padding="10dip"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@color/switch_thumb_material_light"
android:id="@+id/layout_location_popup"
>

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="10dip"
    android:text="Test Pop-Up"
    />

</LinearLayout>

Answer 1

将代码更改为：

private void showLocationPopup() {

    LayoutInflater inflater = (LayoutInflater)
            getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View layout = inflater.inflate(R.layout.popup_location,(ViewGroup) getActivity().findViewById(R.id.layout_location_popup));
    PopupWindow pw = new PopupWindow(
            layout,
            100,
            100,
            true);
    // The code below assumes that the root container has an id called 'main'
    pw.setWindowLayoutMode(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    pw.showAtLocation(layout, Gravity.CENTER, 0, 0);

}

和

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:padding="10dip"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#FFFFFF"
android:id="@+id/layout_location_popup">

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="10dip"
    android:text="Test Pop-Up"/>
</LinearLayout>

我已经换了颜色，因为你选的那件不起作用。对我来说，这似乎不是典型的android颜色。此外，我还将版面宽度和高度设置为“包裹内容”。对我来说，它现在显示在屏幕中间的白色背景。