Implement auto scroll marquee TextView in ListView
This example implement auto scroll TextView in custom ListView to "List System Properties of Android system".Implement auto scroll marquee TextView in ListView |
To make a TextView auto-run, if the text is longer than display area, add the line to <TextView> in layout file:
And call textview.setSelected(true) in Java code.
android:singleLine="true"
android:ellipsize="marquee"
android:marqueeRepeatLimit ="marquee_forever"
And call textview.setSelected(true) in Java code.
MainActivity.java
package com.example.androidcustomlistview;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Properties;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;
import android.content.Context;
public class MainActivity extends Activity {
private class SystemProperties{
private String propertiesName;
private String properties;
SystemProperties(String pName, String p){
propertiesName = pName;
properties = p;
}
public String getPropertiesName(){
return propertiesName;
}
public String getpPoperties(){
return properties;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView listView = (ListView)findViewById(R.id.listview);
//Init ArrayList of MyObject
ArrayList<SystemProperties> myPropertyList = new ArrayList<SystemProperties>();
//get System Properties
Properties properties = System.getProperties();
Enumeration<String> propEnum =
(Enumeration<String>)properties.propertyNames();
while(propEnum.hasMoreElements()){
String propName = propEnum.nextElement();
String prop = System.getProperty(propName);
SystemProperties nexProp = new SystemProperties(propName, prop);
myPropertyList.add(nexProp);
}
MyAdapter myAdapter = new MyAdapter(this, myPropertyList);
listView.setAdapter(myAdapter);
listView.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent,
View view, int position, long id) {
SystemProperties clickedObj = (SystemProperties)parent.getItemAtPosition(position);
Toast.makeText(MainActivity.this,
clickedObj.getPropertiesName() + ":\n" +
clickedObj.getpPoperties(),
Toast.LENGTH_LONG).show();
}});
}
private class MyAdapter extends BaseAdapter {
private ArrayList<SystemProperties> myList;
private Activity parentActivity;
private LayoutInflater inflater;
public MyAdapter(Activity parent, ArrayList<SystemProperties> l) {
parentActivity = parent;
myList=l;
inflater = (LayoutInflater)parentActivity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return myList.size();
}
@Override
public Object getItem(int position) {
return myList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView (int position, View convertView,
ViewGroup parent) {
View view = convertView;
if(convertView==null)
view = inflater.inflate(R.layout.row, null);
TextView text1 = (TextView)view.findViewById(R.id.text1);
TextView text2 = (TextView)view.findViewById(R.id.text2);
SystemProperties myObj = myList.get(position);
text1.setText(String.valueOf(myObj.getPropertiesName()));
text2.setText(myObj.getpPoperties());
text2.setSelected(true);
return view;
}
}
}
row.xml
<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".MainActivity" >
<TextView
android:id="@+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/text2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:ellipsize="marquee"
android:marqueeRepeatLimit ="marquee_forever"
android:textStyle="bold"/>
</LinearLayout>
activity_main.xml
<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="android-coding.blogspot.com" />
<ListView
android:id="@+id/listview"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Also read: Implement auto scroll marquee TextView in Spinner
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