如何在LinearLayout中实现ListView？

Question

I am trying to make a simple Checkbook app, whose MainActivity stores a list of transactions. I would like a TextView at the top and bottom of the screen that show the account balance and an option to add a new transaction, respectively. I would like a list of transactions in between that scroll. I was able to implement a ListView and add a header and footer view, but if the transaction list exceeds the size of the screen the headers and footers can scroll off screen.

Is there any way to position a ListView within the linear layout, or freeze the headers/footers to stay on the screen?

Here is my XML file so far:

<TextView
    android:id="@+id/header_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:text="@string/default_header_string">
</TextView>

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

<TextView
    android:id="@+id/footer_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:text="@string/add_transaction_string">
</TextView>

And here is my onCreate, which has no syntax errors but I am unable to click the footerview to add a transaction:

    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_checkbook);

    ListView list = (ListView) findViewById(R.id.transaction_list_view);

    // Create a new Adapter
    mAdapter = new TransactionAdapter(list.getContext());

    // Inflate footerView and headerView
    LayoutInflater inflater = getLayoutInflater();
    TextView headerView = (TextView) inflater.inflate(R.layout.header_view, null);
    TextView footerView = (TextView) inflater.inflate(R.layout.footer_view, null);

    // Set listener for footerView
    footerView.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent transactionIntent = new Intent(CheckbookActivity.this, AddTransactionActivity.class);
            startActivityForResult(transactionIntent, ADD_TRANSACTION_REQUEST);
        }
    });

    list.setAdapter(mAdapter);
}

Answer 1

use the below code. This will satisfy your requirement. I tried this and working for me. Relative layout with below,above attributes. Relativelayout is better than Linear layout with weight method.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/relative"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent" >

<TextView
    android:id="@+id/textView1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_alignParentTop="true"
    android:gravity="center_horizontal"
    android:text="ListView Heading" />

<TextView
    android:id="@+id/textView2"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_alignParentBottom="true"
    android:gravity="center_horizontal"
    android:text="ListView Footer" />

<ListView 
     android:id="@+id/listView1"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:layout_below="@id/textView1"
     android:layout_above="@id/textView2"

    ></ListView>

The UI will like this

Answer 2

Yes, you can do it with weightsum and layout_weight in linearlayout and also you can create this type of view using RelativeLayout.

1) In LinearLayout just add weightsum="1" to your linearlayout and add layout_weight="0.2" to each of your header and footer and add layout_weight="0.6" to your listview.

2) In relativeLayout add alignParentTop to your header and alignParentBottom to your footer and set listview to layout_below="@+id/header" and layout_above="2+id/footer"

Answer 3

Try this way, hope this will help you to solve your problem. Instead of using header/footer just put as below code in your XML:

<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center">

    <TextView
        android:id="@+id/header_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/default_header_string">
    </TextView>

    <ListView
        android:id="@+id/transaction_list_view"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1">
    </ListView>

    <TextView
        android:id="@+id/footer_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/add_transaction_string">
    </TextView>
</LinearLayout>

Answer 4

I found a possible solution for your problem from a similiar post. Hope this helps you.

Answer 5

For what you are trying to accomplish to freeze the header/footer. It will be easier to use a relative layout to position the header/footer then have your listview in the middle

<RelativeLayout ...>
<TextView
    android:id="@+id/header_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:gravity="center"
    android:text="@string/default_header_string">
</TextView>

<ListView
    android:id="@+id/transaction_list_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/header_view"
    android:layout_above="@+id/footer_view">
</ListView>

<TextView
    android:id="@+id/footer_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:gravity="center"
    android:text="@string/add_transaction_string">
</TextView>
</RelativeLayout>

You can use a LinearLayout for this task. But I don't recommend it as it's a bit "hacky".

Answer 6

1. Get all the elements in a array: Example:- (weatherArray)

2. Loop through all the elements :-

Example:-

mainLayout = ((LinearLayout)refreshObj.get("mainLayout"));
    mainLayout.removeAllViews();

for (int i = 0; i < weatherArray.length(); i++) {

 View childView = getLayoutInflater().inflate(R.layout.weather_row4_item,   mainLayout,false); 

 TextView todayTempStatus = (TextView) childView.findViewById(R.id.todayTempStatus);

todayTempStatus.setText("");

}

1. This is an example without using listview, which we will populate lienarlayout using child view.