以编程方式在HorizontalScrollView中插入视图 [英] Insert views in HorizontalScrollView programmatically
问题描述
我正在制作一个看起来像这样的聊天应用(虚拟视图):
I'm making a chat app which looks like this(dummy view):
使用xmls&完全保持原状
Use the xmls & activity exactly as they are
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<HorizontalScrollView
android:id="@+id/chat_message_HSV"
android:layout_width="fill_parent"
android:layout_height="75dp"
android:layout_alignParentBottom="true"
android:layout_toLeftOf="@+id/send"
android:clickable="true" >
<LinearLayout
android:id="@+id/LL_inside_HSV"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:orientation="horizontal" />
</HorizontalScrollView>
<ImageButton
android:id="@+id/send"
android:layout_width="75dp"
android:layout_height="75dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:src="@drawable/ic_launcher" />
</RelativeLayout>
我想向HorizontalScrollView(HSV)添加一个视图.我了解到, HSV只能有1个孩子(主要是LinearLayout)&视图必须添加到其中.这是我要添加的视图:
I want to add a view to HorizontalScrollView(HSV). I've read that HSV can have only 1 child (mostly LinearLayout) & views must be added to it. This is the view I want to add:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="75dp"
android:layout_height="75dp"
android:orientation="vertical"
android:background="#454545" >
<ImageView
android:id="@+id/profilePicture"
android:layout_width="60dp"
android:layout_height="60dp" />
<AutoCompleteTextView
android:layout_width="75dp"
android:layout_height="wrap_content" />
</LinearLayout>
这是我的活动:
public class MainActivity extends Activity {
ImageButton sendIB;
HorizontalScrollView chatMessageHSV;
LinearLayout lLinsideHSV;
View child;
LayoutInflater inflater;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
inflater = (LayoutInflater) this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
child = inflater.inflate(R.layout.word_element, null, false);
sendIB = (ImageButton) findViewById(R.id.send);
chatMessageHSV = (HorizontalScrollView) findViewById(R.id.chat_message_HSV);
lLinsideHSV = (LinearLayout) findViewById(R.id.LL_inside_HSV);
chatMessageHSV.setOnClickListener(new OnClickListener() {
// this never gets triggered
@Override
public void onClick(View arg0) {
Toast.makeText(MainActivity.this, "hsv", Toast.LENGTH_SHORT)
.show();
}
});
lLinsideHSV.setOnClickListener(new OnClickListener() {
// this never gets triggered
@Override
public void onClick(View arg0) {
Toast.makeText(MainActivity.this, "LL", Toast.LENGTH_SHORT)
.show();
}
});
sendIB.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
lLinsideHSV.addView(child);
}
});
}// end of onCreate
}
注意:我要在HSV的Click上添加视图.
NOTE: I want to add views onClick of HSV.
Q-1:我无法触发HSV或其中的LinearLayout的onClick.我尝试做onTouchEvent,但每次触摸都会触发该事件4-5次.
Q-1 : I am unable to trigger the onClick of HSV or the LinearLayout inside it. I tried doing onTouchEvent but that event is triggered 4-5 times on every touch.
Q-2我编写了将代码插入到按钮的onClick内的代码(只是为了进行实验).我只能插入一次视图.之后,它会抛出一个异常:
Q-2 I wrote the code to insert view inside onClick of button(just to experiment). I am able to insert the view only once. After that it throws an exception saying:
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
那么我该如何再次插入视图&再来一次?
So how do I insert the views again & again??
推荐答案
问题2:您必须创建一个新的孩子
Q2: You have to create new child
child = inflater.inflate(R.layout.word_element, null, false);
在每个点击事件上.像这样:
on every click event. Something like:
@Override
onClick() {
View child = inflater.inflate(...);
lLinsideHSV.addView(child);
}
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