我創造了這個佈局:如何在另一個LinearLayout之後添加LinearLayout?
<!-- create_structure.xml -->
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ly_create_structure"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
</LinearLayout>
這等
<!-- add_level_in_structure.xml -->
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ly_level"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/txt_num"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1#"
android:layout_weight="1"/>
<EditText
android:id="@+id/edit_sb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="number"
android:layout_weight="3">
<requestFocus />
</EditText>
<ImageButton
android:id="@+id/add_level"
android:scaleType="fitXY"
android:layout_width="48dip"
android:layout_height="48dip"
android:cropToPadding="false"
android:paddingLeft="10dp"
android:src="@drawable/ic_menu_add" />
</LinearLayout>
我wanto點擊在alertDialog「添加水平」(每級中後以編程方式添加LinearLayout.ly_level在LinearLayout.ly_create_structure LinearLayout.ly_level有一個顯示alertDialog的鏈接)。
的代碼是:
public class CreateStructureActivity extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.create_structure);
addLevel();
}
private void addLevel() {
LinearLayout mainActivityLayout = (LinearLayout)findViewById(R.id.ly_create_structure);
LayoutInflater li = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout ly = (LinearLayout) li.inflate(R.create_structure, null);
ImageButton ib = (ImageButton) ly.findViewById(R.id.add_level);
ib.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDialog();
}
});
mainActivityLayout.addView(ly);
}
private void showDialog() {
final CharSequence[] items = {"Add Level", "Delete"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Actions");
builder.setItems(items, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
switch(item){
case 0:
addLivello();
break;
case 1:
delete();
break;
}
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
有了這個代碼,我可以添加的LinearLayout作爲最後一個,但我想它包含按鈕點擊,顯示一個AlertDialog中的LinearLayout後添加。你能幫我實施嗎?
UPDATE 1: 我無法理解如何獲取索引。我試圖用這種方式:
private void addLevel() {
LinearLayout mainActivityLayout = (LinearLayout)findViewById(R.id.ly_create_structure);
LayoutInflater li = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout ly = (LinearLayout) li.inflate(R.create_structure, null);
ImageButton ib = (ImageButton) ly.findViewById(R.id.add_level);
/**
* New code to get index
*/
ViewGroup vg = (ViewGroup) ib.getParent();
int index = mainActivityLayout.indexOfChild(vg);
ib.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDialog();
}
});
mainActivityLayout.addView(ly, index);
}
UPDATE 2: 我解決了這個問題。餘移動下面的代碼中的ShowDialog()
ViewGroup vg = (ViewGroup) ib.getParent();
int index = mainActivityLayout.indexOfChild(vg);
我在原始消息 – Webman 2012-02-17 13:29:55