android - ScrollView 在弹出窗口中不起作用

Question

我有一个弹出窗口，并且添加了 ScrollView 作为其父布局。但它不起作用。如果我将 scrollview 更改为 diff 布局，它的工作..基本上我有多个布局(相对和线性的混合)并且我希望它可以滚动。我已经删除了复杂的树结构布局，所以让代码看起来很简单..

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/ScrollView1"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:fillViewport="true" >

            <LinearLayout
                android:id="@+id/LinearLayout2"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@drawable/chatheadpop"
                android:orientation="vertical" >

                <TableRow
                    android:id="@+id/headerRow"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:padding="10dp" >

                    <ImageView
                        android:id="@+id/profilePic"
                        android:layout_width="0dp"
                        android:layout_height="110dp"
                        android:layout_marginRight="10dp"
                        android:layout_weight="0.40"
                        android:background="#ccc" />

                    <RelativeLayout
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="0.60" >

                        <TextView
                            android:id="@+id/phoneIcon"
                            android:layout_width="30dp"
                            android:layout_height="wrap_content"
                            android:layout_marginBottom="10dp"
                            android:textSize="18sp"
                            android:color="#ccc" />

                        <TextView
                            android:id="@+id/phoneField"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_alignBaseline="@+id/phoneIcon"
                            android:layout_toRightOf="@+id/phoneIcon"
                            android:maxLines="1"
                            android:singleLine="true"
                            android:textSize="18sp"
                            android:color="#aaa" />

                        <TextView
                            android:id="@+id/nameIcon"
                            android:layout_width="30dp"
                            android:layout_height="wrap_content"
                            android:layout_below="@+id/phoneIcon"
                            android:layout_marginBottom="10dp"
                            android:textSize="18sp"
                            android:color="#ccc" />

                        <TextView
                            android:id="@+id/nameField"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_alignBaseline="@+id/nameIcon"
                            android:layout_toRightOf="@+id/nameIcon"
                            android:maxLines="1"
                            android:singleLine="true"
                            android:textSize="18sp"
                            android:color="#aaa" />

                        <TextView
                            android:id="@+id/locationIcon"
                            android:layout_width="30dp"
                            android:layout_height="wrap_content"
                            android:layout_below="@+id/nameIcon"
                            android:layout_marginBottom="10dp"
                            android:textSize="18sp"
                            android:visibility="invisible"
                            android:color="#ccc" />

                        <TextView
                            android:id="@+id/locationField"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_alignBaseline="@+id/locationIcon"
                            android:layout_toRightOf="@+id/locationIcon"
                            android:maxLines="1"
                            android:singleLine="true"
                            android:textSize="16sp"
                            android:visibility="invisible"
                            android:color="#aaa" />

                        <TextView
                            android:id="@+id/jobIcon"
                            android:layout_width="30dp"
                            android:layout_height="wrap_content"
                            android:layout_below="@+id/locationIcon"
                            android:layout_marginBottom="10dp"
                            android:textSize="18sp"
                            android:visibility="invisible"
                            android:color="#ccc" />

                        <TextView
                            android:id="@+id/jobField"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_alignBaseline="@+id/jobIcon"
                            android:layout_toRightOf="@+id/jobIcon"
                            android:maxLines="1"
                            android:singleLine="true"
                            android:textSize="16sp"
                            android:visibility="invisible"
                            android:color="#aaa" />
                    </RelativeLayout>
                </TableRow>
    </LinearLayout>
    </ScrollView>

创建弹出窗口的代码

private void initiatePopupWindow(View anchor, final int pos) {
            try {

                popupWindow.dismiss();

            } catch (Exception e) {
                // TODO: handle exception
                e.printStackTrace();
            }

            try {
                //Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();

                LayoutInflater layoutInflater = (LayoutInflater) getBaseContext().getSystemService(LAYOUT_INFLATER_SERVICE);  
                popupView = layoutInflater.inflate(R.layout.chat_popup, null);  
                //popupWindow = new PopupWindow(popupView, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);  
                popupWindow = new PopupWindow(popupView, width_px, LayoutParams.WRAP_CONTENT); 
                //popupWindow.setBackgroundDrawable(new ColorDrawable());
                //popupWindow.setFocusable(true);
                //popupWindow.setOutsideTouchable(true);

                profilePic = (ImageView) popupView.findViewById(R.id.profilePic);
                phoneIcon = (TextView) popupView.findViewById(R.id.phoneIcon);

......
......
......
}

Answer 1

好的，这里也提示你可能需要展示它

if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT){
    popupWindow.showAsDropDown(context.getCurrentFocus(), 0, 0,Gravity.CENTER_HORIZONTAL); 
}else{
   popupWindow.showAtLocation(context.getCurrentFocus(), Gravity.CENTER_HORIZONTAL|Gravity.CENTER_VERTICAL, 10, 10);
        }

编辑 1

TableRow 应该在 TableLayout 中使用，但没有限制，如果您在任何其他布局中将它作为子级使用，那么它会作为水平 linearLayout.. 所以既然你有各种各样的问题，我想你的问题源于你的 java 代码弹出一个 NPE 但你从未打印错误所以你没有真的没有真正看到它，或者可能是框架将您的 xml 小部件创建到内存中。所以这是您的解决方案，它会起作用，

我更改了 xml 中的某些部分，但您可以保留您的版本，但我的版本在布局方面符合您的要求，但具有不同的 View 组

XML 我称它为 popmenuitem.xml

  <?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/headerRow"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:weightSum="10" >

        <ImageView
            android:id="@+id/profilePic"
            android:layout_width="0dp"
            android:layout_height="110dp"
            android:layout_marginRight="10dp"
            android:layout_weight="4"
            android:background="#ccc" />

        <RelativeLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="6" >

            <TextView
                android:id="@+id/phoneIcon"
                android:layout_width="30dp"
                android:layout_height="wrap_content"
                android:layout_marginBottom="10dp"
                android:textSize="18sp"
                android:color="#ccc" />

            <TextView
                android:id="@+id/phoneField"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignBaseline="@+id/phoneIcon"
                android:layout_toRightOf="@+id/phoneIcon"
                android:maxLines="1"
                android:singleLine="true"
                android:textSize="18sp"
                android:color="#aaa" />

            <TextView
                android:id="@+id/nameIcon"
                android:layout_width="30dp"
                android:layout_height="wrap_content"
                android:layout_below="@+id/phoneIcon"
                android:layout_marginBottom="10dp"
                android:textSize="18sp"
                android:color="#ccc" />

            <TextView
                android:id="@+id/nameField"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignBaseline="@+id/nameIcon"
                android:layout_toRightOf="@+id/nameIcon"
                android:maxLines="1"
                android:singleLine="true"
                android:textSize="18sp"
                android:color="#aaa" />

            <TextView
                android:id="@+id/locationIcon"
                android:layout_width="30dp"
                android:layout_height="wrap_content"
                android:layout_below="@+id/nameIcon"
                android:layout_marginBottom="10dp"
                android:textSize="18sp"
                android:visibility="invisible"
                android:color="#ccc" />

            <TextView
                android:id="@+id/locationField"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignBaseline="@+id/locationIcon"
                android:layout_toRightOf="@+id/locationIcon"
                android:maxLines="1"
                android:singleLine="true"
                android:textSize="16sp"
                android:visibility="invisible"
                android:color="#aaa" />

            <TextView
                android:id="@+id/jobIcon"
                android:layout_width="30dp"
                android:layout_height="wrap_content"
                android:layout_below="@+id/locationIcon"
                android:layout_marginBottom="10dp"
                android:textSize="18sp"
                android:visibility="invisible"
                android:color="#ccc" />

            <TextView
                android:id="@+id/jobField"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignBaseline="@+id/jobIcon"
                android:layout_toRightOf="@+id/jobIcon"
                android:maxLines="1"
                android:singleLine="true"
                android:textSize="16sp"
                android:visibility="invisible"
                android:color="#aaa" />
        </RelativeLayout>
    </LinearLayout>

  </LinearLayout>

</ScrollView>

然后在您的 Activity 中，请注意我以一种笨拙的方式对其进行了测试..但是您可以做一些小的更改。

Activity 代码

  //called this in my oncreate
  new Handler().postDelayed(new Runnable() {

        @Override
        public void run() {
            // TODO Auto-generated method stub
            initiatePopupWindow(getWindow().getDecorView(), 0, MainActivity.this);// i left pos because i didnt use it
        }
    }, 5000); // waited 5 seconds to notice it

  // I AM OUT OF MY ONCREATE METHOD AFTER THIS LINE 

  @SuppressLint("NewApi") 
private void initiatePopupWindow(View anchor, final int pos,Activity a) {

    PopupWindow popupWindow = null; // i know the initialisation is outside this method but since 
    // i am just throwing an example i put it here..
    View popupView;

    if(popupWindow != null){ // the unreachable error being thrown here is the tautology code i just did
        // but if you remove the initialisation from this method and place it outside the error will be gone
        popupWindow.dismiss(); //
    } // with this you get to remove the exception catch clause, and make your code look like you know how it works

    //
    try {
        //Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
        popupView = a.getLayoutInflater().inflate(R.layout.popmenuitem, null);  
        //popupWindow = new PopupWindow(popupView, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);  
        popupWindow = new PopupWindow(a); 
        popupWindow.setWidth(FrameLayout.LayoutParams.MATCH_PARENT);
        popupWindow.setHeight(FrameLayout.LayoutParams.WRAP_CONTENT);
        // i used FrameLayout.LayoutParams because of the scrollView, this was some of the reasons i think might be the reason of the error, might
        // not be though, but when incorporated everything seems cool..ScrollView extends FrameLayout
        popupWindow.setContentView(popupView);
        //popupWindow.setBackgroundDrawable(new ColorDrawable());
        //popupWindow.setFocusable(true);
        //popupWindow.setOutsideTouchable(true);
        //profilePic = (ImageView) popupView.findViewById(R.id.profilePic);
        //phoneIcon = (TextView) popupView.findViewById(R.id.phoneIcon);
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT){
            popupWindow.showAsDropDown(anchor, 0, 0,Gravity.CENTER_HORIZONTAL); 
        }else{
            popupWindow.showAtLocation(anchor, Gravity.CENTER_HORIZONTAL|Gravity.CENTER_VERTICAL, 10, 10);
        }
    }catch(NullPointerException e){
        e.printStackTrace();
    }
}

快乐编码先生..