How to programmatically set the size of the font in the list item before adding it to the ListView?

Question

I'm interested in how you can change the size of the text in the list and then add it to the ListView. I'm using a list_item with custom layout . The question is how you can set the size of the text before it gets into the ListView. I hope for your help.

list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    xmlns:android1="http://schemas.android.com/apk/res/android">

<LinearLayout
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    >

    <TextView
        android:id="@+id/shop_name"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="1"
        />

    <TextView
        android:id="@+id/shop_address"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="2"
        />

</LinearLayout>

</LinearLayout>

day_list_events.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:layout_gravity="center"
    android:id="@+id/layout"
    >

<TextView 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:id="@+id/day_and_data"
    android:text="Перелік клієнтів на сьогоднішній день."
    android:textStyle="bold"
    />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:id="@+id/help_info"
    android:text="(Щоб отримати інформацію про клієнта та оформити замовлення - натисніть на відповідного клієнта у списку)"
    android:textColor="#A0A0A0"
    />

<ListView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:id="@+id/day_list_event"
    >

</ListView>

</LinearLayout>

DayListEventsActivity.java

import java.util.ArrayList;
import java.util.HashMap;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.os.Bundle;
import android.view.Window;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class DayListEventsActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    super.onCreate(savedInstanceState);
    setContentView(R.layout.day_list_events);
    sharedPreferences = getSharedPreferences("impInfo", Context.MODE_PRIVATE);
    Resources res = this.getResources();
    ArrayList<HashMap<String, String>> dayShopsInfo = new ArrayList<HashMap<String, String>>();
    String[] shopName = res.getStringArray(R.array.shop_name);
    String[] shopAddress = res.getStringArray(R.array.shop_address);        
    for(int i = 0; i < shopName.length; i++){
        HashMap<String, String> dayShopsInfoCont = new HashMap<String, String>();
        dayShopsInfoCont.put(KEY_SHOP_NAME, shopName[i]);
        dayShopsInfoCont.put(KEY_SHOP_ADDRESS, shopAddress[i]);
        System.out.println(i+" "+shopName[i]+" "+shopAddress[i]);
        dayShopsInfo.add(dayShopsInfoCont);         
    }
    ListView shopList = (ListView)findViewById(R.id.day_list_event);
    SimpleAdapter shopListAdapter = new SimpleAdapter(this,
            dayShopsInfo,
            R.layout.list_item,
            new String[]{KEY_SHOP_NAME, KEY_SHOP_ADDRESS},
            new int[]{R.id.shop_name, R.id.shop_address});
    shopList.setAdapter(shopListAdapter);
    shopList.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
}

private final String KEY_SHOP_NAME = "shop name";
private final String KEY_SHOP_ADDRESS = "shop address";
private SharedPreferences sharedPreferences;
}

UPDATE (Solution).

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

public class DayListEventsActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    super.onCreate(savedInstanceState);
    setContentView(R.layout.day_list_events);
    sharedPreferences = getSharedPreferences("impInfo", Context.MODE_PRIVATE);
    Resources res = this.getResources();
    ArrayList<HashMap<String, String>> dayShopsInfo = new ArrayList<HashMap<String, String>>();
    String[] shopName = res.getStringArray(R.array.shop_name);
    String[] shopAddress = res.getStringArray(R.array.shop_address);        
    for(int i = 0; i < shopName.length; i++){
        HashMap<String, String> dayShopsInfoCont = new HashMap<String, String>();
        dayShopsInfoCont.put(KEY_SHOP_NAME, shopName[i]);
        dayShopsInfoCont.put(KEY_SHOP_ADDRESS, shopAddress[i]);
        System.out.println(i+" "+shopName[i]+" "+shopAddress[i]);
        dayShopsInfo.add(dayShopsInfoCont);         
    }
    ListView shopList = (ListView)findViewById(R.id.day_list_event);
    MySimpleAdapter shopListAdapter = new MySimpleAdapter(this,
            dayShopsInfo,
            R.layout.list_item,
            new String[]{KEY_SHOP_NAME, KEY_SHOP_ADDRESS},
            new int[]{R.id.shop_name, R.id.shop_address});
    shopList.setAdapter(shopListAdapter);
    shopList.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
}

public class MySimpleAdapter extends SimpleAdapter{

    public MySimpleAdapter(Context context,
                            List<? extends Map<String, ?>> data,
                            int resource,
                            String[] from, int[] to) {
        super(context, data, resource, from, to);           
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent){
        View returnView = super.getView(position, convertView, parent);
        TextView shopName = (TextView)returnView.findViewById(R.id.shop_name);
        shopName.setTextSize(20.0f);
        return returnView;
    }

}

private final String KEY_SHOP_NAME = "shop name";
private final String KEY_SHOP_ADDRESS = "shop address";
private SharedPreferences sharedPreferences;
}

Solution 1

Simply do this in the getView() method of the Adapter, to set the font size.

tv.setTextSize(20.0f);

Solution 2

If you are using xml for setting layout for list_item and there you have TextView you can change the size of the text like this:

<TextView  
    android:id="@+id/text_id"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:textSize="20sp" /> // This is a size of your text

Solution 3

There's not "size of text" You can change the size of the text inside the TextView: Add:

 android:textSize="16sp" 

TO your XML Or you can do it by code in the getView() method in the Adapter:

YOUR_TEXTVIEW.setTextSize(16);

Comments

[Siruk Viktor]

))) Does not depend on the size of the test should he screen resolution - so I had to change it programmatically

[Siruk Viktor]

That is, I need to create your own Adapter - inherit a version of a standard adapter and override getView()?

[Siruk Viktor]

Sorry - but that does not work - because the adapter you need to pass the id, not the objects.