Get memory information

Example to get memory information using Runtime.

package com.example.androidmem;

import android.os.Bundle;
import android.app.Activity;
import android.widget.TextView;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        TextView memInfo = (TextView)findViewById(R.id.meminfo);
        
        String info = "";
        
        info += "Total memory: " + Runtime.getRuntime().totalMemory() + "\n";
        info += "Free memory: " + Runtime.getRuntime().freeMemory() + "\n";
        info += "Max memory: " + Runtime.getRuntime().maxMemory() + "\n";
        
        memInfo.setText(info);
    }

}

<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="@string/hello_world" />
    <TextView
        android:id="@+id/meminfo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>