0

我创建了这个布局:

<!-- 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>

还有这个

<!-- 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>

在alertDialog中单击“添加级别”后,我想以编程方式在LinearLayout.ly_create_structure中添加LinearLayout.ly_level(LinearLayout.ly_level中的每个级别都有一个显示alertDialog的链接)。

代码是:

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();
    }    
}

使用此代码,我可以添加一个 LinearLayout 作为最后一个,但我想在包含单击以显示 AlertDialog 的按钮的 LinearLayout 之后添加它。你能帮我实现这个吗?

更新 1:我不明白如何获取索引。我以这种方式尝试:

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);
    }

更新2:我解决了这个问题。我在 showDialog() 中移动下面的代码

ViewGroup vg = (ViewGroup) ib.getParent();
int index = mainActivityLayout.indexOfChild(vg);
4

2 回答 2

0

好的,首先,您将获得视图对象,然后像在我们当前的代码中创建的那样创建线性布局对象并添加 viewObject.addView("linearlayout object");。我想,这对你很有帮助..

于 2012-02-17T12:00:08.080 回答
0

您可以在Dev Android上使用方法

它也采用参数中的视图索​​引。

private void addLevel(int index) {
        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, index);
    }
于 2012-02-17T11:53:24.980 回答