Android load image from url

How to load image from a URL or internet in android

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To add internet permission in your android Manifest file.

<uses-permission android:name="android.permission.INTERNET" />

Add ImageView on your xml file.

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

        <ImageView
            android:id="@+id/ivPhoto"
            android:layout_width="120dp"
            android:layout_height="120dp"
            android:layout_alignParentTop="true"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="10dp"
            android:padding="5dp"
            android:layout_gravity="center"
            android:src="@drawable/photo"

            />

    </LinearLayout>

To create an Async class as an inner class in our MainActivity class. The use of Asyn class is very important since it prevents us from downloading our remote image using the main application thread.

Code :


import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ImageView;

import java.io.InputStream;

public class ImageloadActivity extends AppCompatActivity {

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

        ImageView imgPhoto = (ImageView)findViewById(R.id.ivPhoto);

        String urlPath = "http://10.42.0.1/dsms/backend/web/stud_photos/119426.jpg";

        Downloadimagefromurl downloadTask = new Downloadimagefromurl(imgPhoto);
        downloadTask.execute(urlPath);

    }



    private class Downloadimagefromurl extends AsyncTask<String,Void,Bitmap>{

        ImageView bmImg;

        public Downloadimagefromurl(ImageView bmImg) {
            this.bmImg = bmImg;
        }

        @Override
        protected Bitmap doInBackground(String... urls) {
            String pathFile = urls[0];
            Bitmap bitmap = null;

            try {
                InputStream inp = new java.net.URL(pathFile).openStream();
                bitmap = BitmapFactory.decodeStream(inp);
            } catch (Exception e){
                Log.e("Error",e.getMessage());
                e.printStackTrace();
            }

            return bitmap;
        }

        @Override
        protected void onPostExecute(Bitmap bitmap) {
            bmImg.setImageBitmap(bitmap);
        }

    }




}

Subscribe Here Output

Display default image in imageview if no image returned from server

 @Override
    protected void onPostExecute(Bitmap bitmap) {
        if(bitmap != null)
            bmImg.setImageBitmap(bitmap);
        else
            bmImg.setImageResource(R.drawable.photo);

    }

c program to find area of circle

Code

#include<stdio.h>

void main()
{

float area,radius,pi=3.14;

printf("Enter the radius of a circle : ");
scanf("%f",&radius);

area = pi * radius * radius;

printf("Area of Circle is %f\n",area);

}


Video

Write a c program to find whether a number odd or even

Code


#include<stdio.h>

void main()
{
int a;
printf("Enter a number ");
scanf("%d",&a);

if(a%2==0)

  printf("The %d is even number\n",a);

else

  printf("The %d is odd number\n",a);

}

Video

Write a C program for to find largest among three numbers

#include<stdio.h>

void main()
{

int x,y,z;

printf("Enter three numbers : ");
scanf("%d,%d,%d",&x,&y,&z);

if((x>y) && (x>z))
{
printf("The greater value is %d\n",x);
}
else if(y>z)
{
printf("The greater value is %d\n",y);
}
else
{
printf("The greater value is %d\n",z);
}

}

Write a C program for Arithmetic Operations

Arithmetic Operators: These are used to perform arithmetic/mathematical operations on operands. 

• Addition: The ‘+’ operator adds two operands. For example, x+y.
• Subtraction: The ‘-‘ operator subtracts two operands. For example, x-y.
• Multiplication: The ‘*’ operator multiplies two operands. For example, x*y.
• Division: The ‘/’ operator divides the first operand by the second. For example, x/y.
• Modulus: The ‘%’ operator returns the remainder when first operand is divided by the second. For example, x%y.

Program

#include<stdio.h>

void main()
{

int a,b,c,d,f,g,h;


printf("Enter first number ");
scanf("%d",&a);
printf("Enter Second number ");
scanf("%d",&b);

c=a+b;
printf("Sum %d ",c);

d=a-b;
printf("\nDifference %d ",d);

f=a*b;
printf("\nProduct %d ",f);

g=a/b;
printf("\nDiv %d ",g);

h=a%b;
printf("\nMod %d \n",h);



}

Write C program to print "Hello World"

ALGORITHM

1. BEGIN
2. PRINT "Hello World"
3. END

PROGRAM 


#include<stdio.h>
void main()
{
 printf("Hello World\n");

}


Print Hello World - Malayalam

Introduction to GCC and example