在按钮单击上添加textview

时间：2015-08-10 09:59:43

标签： android textview

我有两个java类和两个带按钮的listview的xml文件。我想将listview行中对应文本的数据传递给线性布局。

这是我的第一个java类的代码。

  public class Items_momo extends Activity {
LinearLayout myLayout;

  @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_items_momo);

    ArrayList<String> list = new ArrayList<String>();
    list.add("Veg Steam Momo");
    list.add("Veg C-Momo");
    list.add("Veg Fry Momo");
    list.add("Veg Kothey Momo");
    list.add("Buff Steam Momo");
    list.add("Buff Fry Momo");
    list.add("Buff Kothey Momo");
    list.add("Buff C-Momo");
    list.add("Chicken Steam Momo");
    list.add("Chicken Fry Momo");
    list.add("Chicken Kothey Momo");
    list.add("Chicken C-Momo");
    list.add("Paneer Steam Momo");
    list.add("Paneer Fry Momo");
    list.add("Paneer Kothey Momo");
    list.add("Paneer C-Momo");

    MyCostumAdapter adapter = new MyCostumAdapter(list, this);
    ListView lView = (ListView) findViewById(R.id.momo_list);
    lView.setAdapter(adapter);
}


}

，第二类代码是

public class MoMoCostumAdapter extends BaseAdapter implements ListAdapter {
LinearLayout myLayout;
private ArrayList<String> list =new ArrayList<String>();
private Context context;
public  MoMoCostumAdapter(ArrayList<String> list,Context context){
    this.list = list;
    this.context = context;
}

@Override
public int getCount() {
    return list.size();
}

@Override
public Object getItem(int pos) {
    return list.get(pos);
}

@Override
public long getItemId(int pos) {
    return 0;
}

@Override
public View getView(final int position, View convertView, ViewGroup  parent) {
    View view = convertView;
    if (view == null) {
        LayoutInflater inflater = (LayoutInflater)  context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        view = inflater.inflate(R.layout.costum_momolayout, null);
    }
    final TextView listItemText =   (TextView)view.findViewById(R.id.list_item_string);
     listItemText.setText(list.get(position));
    Button deleteBtn = (Button)view.findViewById(R.id.delete_btn);
    Button addBtn = (Button)view.findViewById(R.id.add_btn);
    myLayout=(LinearLayout)view.findViewById(R.id.lnear_momo);
    addBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

        }
    });
    deleteBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        }
    });
    return view;
    }
  }

第一个xml布局是

<?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">

<TextView
    android:id="@+id/list_item_string"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:layout_alignParentLeft="true"
    android:paddingLeft="8dp"
    android:textSize="18sp"
    android:textStyle="bold" />

<Button
    android:id="@+id/delete_btn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:layout_centerVertical="true"
    android:layout_marginRight="5dp"
    android:text="Delete" />

<Button
    android:id="@+id/add_btn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_toLeftOf="@id/delete_btn"
    android:layout_centerVertical="true"
    android:layout_marginRight="10dp"
    android:text="Add" />


</RelativeLayout>

，第二个xml布局是

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"      android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:background="#b2b3b7"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context="com.efas.admin.efasrestaurant.Items_momo"
android:id="@+id/relate_momo">

<LinearLayout
    android:orientation="vertical"
    android:layout_width="500dp"
    android:layout_height="match_parent"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:id="@+id/linearLayout">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/momo_list" />
</LinearLayout>

<LinearLayout
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_alignParentTop="true"
    android:layout_toRightOf="@+id/linearLayout"
    android:layout_toEndOf="@+id/linearLayout"
    android:id="@+id/lnear_momo"></LinearLayout>
</RelativeLayout>

我想自动添加textview，因为我点击了listL中的listview中每行的添加按钮，其id为lnear_momo，并将listview的那行中的文本传递给该textview。

3 个答案:

答案 0 :(得分：1)

首先获取linearlayout的实例：

private ArrayList<String> list =new ArrayList<String>();
private Context context;
private LinearLayout ll;
public  MoMoCostumAdapter(ArrayList<String> list,Context context, LinearLayout ll){
    this.list = list;
    this.context = context;
    this.ll = ll;
}

接下来，在添加按钮上单击侦听器，按如下方式添加textview：

TextView t = new TextView(context);
// Add text, color, size, etc for textview 
ll.addView(t); // Add textview to your linearlayout.

答案 1 :(得分：0)

您发布的班级名称仅在此处或您的代码中有所不同...... 

MyCostumAdapter adapter = new MyCostumAdapter(list, this);

和

public class MoMoCostumAdapter extends BaseAdapter implements ListAdapter

答案 2 :(得分：0)

好的我已经更改了一些代码并添加了一个额外的布局，您可以在..

之后删除

<强> Items_momo.java 

public class Items_momo extends Activity {
int counter;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_items_momo);

    ArrayList<String> list = new ArrayList<String>();
    list.add("Veg Steam Momo");
    list.add("Veg C-Momo");
    list.add("Veg Fry Momo");
    list.add("Veg Kothey Momo");
    list.add("Buff Steam Momo");
    list.add("Buff Fry Momo");
    list.add("Buff Kothey Momo");
    list.add("Buff C-Momo");
    list.add("Chicken Steam Momo");
    list.add("Chicken Fry Momo");
    list.add("Chicken Kothey Momo");
    list.add("Chicken C-Momo");
    list.add("Paneer Steam Momo");
    list.add("Paneer Fry Momo");
    list.add("Paneer Kothey Momo");
    list.add("Paneer C-Momo");

    CustomAdapter Adapter = new CustomAdapter(list,this);
    ListView lView = (ListView) findViewById(R.id.momo_list);
    lView.setAdapter(Adapter);
}
public class CustomAdapter extends BaseAdapter{

    private ArrayList<String> list =new ArrayList<String>();
    private Context context;
    public  CustomAdapter(ArrayList<String> list,Context context){
        this.list = list;
        this.context = context;
    }
    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Object getItem(int pos) {
        return list.get(pos);
    }

    @Override
    public long getItemId(int pos) {
        return 0;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        View view = convertView;
        if (view == null) {
            LayoutInflater inflater = (LayoutInflater)  context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            view = inflater.inflate(R.layout.group_items, parent,false);
        }
        TextView listItemText =   (TextView)view.findViewById(R.id.text);
        listItemText.setText(list.get(position));

        final String text = list.get(position);

        Button deleteBtn = (Button)view.findViewById(R.id.delete_btn);
        Button addBtn = (Button)view.findViewById(R.id.add_btn);
        addBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                counter=0;
                counter++;
                LinearLayout lv=(LinearLayout)findViewById(R.id.lnear_layout);
                lv.addView(createNewTextView(text));
            }
            public TextView createNewTextView(String text) {
                final ViewGroup.LayoutParams lparams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
                final TextView textView = new TextView(context);
                textView.setLayoutParams(lparams);
                textView.setMovementMethod(new ScrollingMovementMethod());
                textView.setText("Added Item " + text + " Quantity = " + counter);
                return textView;
            }
        });
        deleteBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

            }
        });
        return view;
    }


}

<强> activity_main.xml中 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/relate_momo"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#b2b3b7"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.efas.admin.efasrestaurant.Items_momo" >

  <LinearLayout
    android:id="@+id/linearLayout"
    android:layout_width="400dp"
    android:layout_height="match_parent"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_alignParentTop="true"
    android:orientation="vertical" >

    <ListView
        android:id="@+id/momo_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
  </LinearLayout>

  <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_alignParentTop="true"
    android:layout_toEndOf="@+id/linearLayout"
    android:layout_toRightOf="@+id/linearLayout"
    android:orientation="vertical" >

        <TextView
        android:id="@+id/lnear_momo"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
        </TextView>
  </LinearLayout>

</RelativeLayout>

<强> main.xml中 

<?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">

  <TextView
    android:id="@+id/text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:layout_alignParentLeft="true"
    android:paddingLeft="8dp"
    android:textSize="18sp"
    android:textStyle="bold" />

  <Button
    android:id="@+id/delete_btn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:layout_centerVertical="true"
    android:layout_marginRight="5dp"
    android:text="Delete" />

  <Button
    android:id="@+id/add_btn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_toLeftOf="@id/delete_btn"
    android:layout_centerVertical="true"
    android:layout_marginRight="10dp"
    android:text="Add" />


</RelativeLayout>

<强>输出

enter image description here

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