我有一個自定義ListView,其中有一個textview和一個圖像。我在我的customlistadapter類中爲imageview設置了onclicklistener,因此我需要在單擊圖像時對主佈局進行一些更改。請參閱參考下面的代碼...在另一個類中訪問一個類的佈局?
MainActivity.java
hmDataList.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long arg1) {
DataFields dataField = (DataFields) hmDataList
.getItemAtPosition(position);
ImageView v = (ImageView) view.findViewById(R.id.hmFieldDeleteImage);
RelativeLayout mainRL = (RelativeLayout)view.findViewById(R.id.hmFieldMainRL);
}
}
CustomListAdapter.java
public View getView(int position, View convertView, ViewGroup parent) {
holder = null;
DataFields rowItems = (DataFields) getItem(position);
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = inflater.inflate(R.layout.home_field_row, null);
holder = new ViewHolder();
holder.mName = (TextView) convertView.findViewById(R.id.hmFieldName);
holder.mDeleteImage = (ImageView)convertView.findViewById(R.id.hmFieldDeleteImage);
convertView.setTag(holder);
holder.mDeleteImage.setTag(position);
final View clickView = convertView;
holder.mDeleteImage.setOnClickListener(new ImageView.OnClickListener() {
@Override
public void onClick(final View view) {
count++;
clickView.setBackgroundColor(color.list_row_bg);
//
//Some changes has to be made for the main activity's layout
//
}
});
}
else {
holder = (ViewHolder) convertView.getTag();
}
holder.mName.setText(rowItems.getName());
return convertView;
}
list_row.xml
<TextView
android:id="@+id/hmFieldName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:gravity="left"
android:shadowColor="#000000"
android:shadowDx="0"
android:shadowDy="0"
android:shadowRadius="2"
android:text="@string/no_data"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#F2F2F2" />
<ImageView
android:id="@+id/hmFieldDeleteImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:contentDescription="@string/right_arrow"
android:src="@drawable/delete" />
activity_main.xml有一些隱藏的小部件,所以我需要在自定義ListView中的圖像被點擊時取消隱藏它們。
說得很簡單,有沒有辦法更新其他類的主要活動的gui? 任何形式的幫助或例子或引用非常感謝。謝謝 !
我沒有得到你的這部分... ,當你創建一個新的CustomListAdapter對象: CustomListAdapter適配器=新.....; adapter.setActivity(this); 這是什麼意思? – 2013-02-09 05:58:16
我試過這個,它不工作,在MainActivity的OnClickListener中我試圖取消隱藏主佈局的小部件,但它給了NullPointerException。我認爲你的實現與我以前的實現相同。 – 2013-02-09 06:30:28