Question

我想创建一个像this link这样的弹出菜单，但是用于我的视图而不是操作栏。我尝试使用android support library v7来支持旧设备。问题是我在创建后端口弹出菜单时得到了RuntimeException: You must supply a layout_height attribute。
这是我的代码段：

// use support lib 
import android.support.v7.widget.PopupMenu;

button = (Button) findViewById(R.id.button);
button.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
    // Creating the instance of PopupMenu
    PopupMenu popup = new PopupMenu(MainActivity.this, button);
    // Inflating the Popup using xml file
    popup.getMenuInflater().inflate(R.menu.popup_menu,
    popup.getMenu());

    // registering popup with OnMenuItemClickListener
    popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
        public boolean onMenuItemClick(MenuItem item) {
            Toast.makeText(MainActivity.this,
            "You Clicked : " + item.getTitle(),
            Toast.LENGTH_SHORT).show();
            return true;
        }
    });

    popup.show();
}
});

logcat错误：

    03-18 16:39:53.005: E/AndroidRuntime(28936): FATAL EXCEPTION: main
    03-18 16:39:53.005: E/AndroidRuntime(28936): java.lang.RuntimeException: Binary XML file line #17: You must supply a layout_height attribute.
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.content.res.TypedArray.getLayoutDimension(TypedArray.java:492)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.view.ViewGroup$LayoutParams.setBaseAttributes(ViewGroup.java:6057)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.view.ViewGroup$MarginLayoutParams.<init>(ViewGroup.java:6225)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.widget.FrameLayout$LayoutParams.<init>(FrameLayout.java:610)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.widget.FrameLayout.generateLayoutParams(FrameLayout.java:554)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.widget.FrameLayout.generateLayoutParams(FrameLayout.java:56)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.view.LayoutInflater.inflate(LayoutInflater.java:486)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.support.v7.internal.view.menu.MenuPopupHelper$MenuAdapter.getView(MenuPopupHelper.java:335)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.support.v7.internal.view.menu.MenuPopupHelper.measureContentWidth(MenuPopupHelper.java:190)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.support.v7.internal.view.menu.MenuPopupHelper.tryShow(MenuPopupHelper.java:128)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.support.v7.internal.view.menu.MenuPopupHelper.show(MenuPopupHelper.java:102)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at android.support.v7.widget.PopupMenu.show(PopupMenu.java:108)
    03-18 16:39:53.005: E/AndroidRuntime(28936):    at com.javatpoint.popupmenu.MainActivity$1.onClick(MainActivity.java:41)

如何解决此错误以及如何将弹出菜单的自定义样式应用于支持库？

更新：根据this answer将我的主题更改为Theme.AppCompat，此错误已修复。但我仍然不知道如何为弹出菜单定制样式任何帮助，将不胜感激！

Android中弹出式菜单兼容后端口的自定义样式

0 个答案: