android Image library(Picasso, Glide)

ImageView Picasso, Glide Library 사용. 

Picasso : http://square.github.io/picasso/

Glide : https://github.com/bumptech/glide

Manifast.xml

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

gradle

compile 'com.github.bumptech.glide:glide:3.7.0'     compile 'com.squareup.picasso:picasso:2.5.2'

Mainactivity.java( Picasso )

public class MainActivity extends AppCompatActivity {
    ImageView imageView;
    Button button;
    ProgressBar bar;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        bar = (ProgressBar) findViewById(R.id.progressBar);
        imageView = (ImageView) findViewById(R.id.imageView);
        button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String url ="http://( sampleImage주소 )";
                bar.setVisibility(View.VISIBLE);
 
                Picasso.with(MainActivity.this).load(url).into(imageView, new Callback() {
                    @Override
                    public void onSuccess() {
                        bar.setVisibility(View.GONE);
                    }
 
                    @Override
                    public void onError() {
 
                    }
                });
            }
        });
    }
}
 
 
 

Mainactivity.java( Glide )

public class MainActivity extends AppCompatActivity {
    ImageView imageView;
    Button button;
    ProgressBar bar;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        bar = (ProgressBar) findViewById(R.id.progressBar);
        imageView = (ImageView) findViewById(R.id.imageView);
        button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String url ="http://( sampleImage주소 )";
                bar.setVisibility(View.VISIBLE);
 
                Glide.with(MainActivity.this).load(url).listener(new RequestListener<String, GlideDrawable>() {
                @Override
                public boolean onException(Exception e, String model, Target<GlideDrawable> target, boolean isFirstResource) {
                    bar.setVisibility(View.GONE);
                    return false;
                }
 
                @Override
                public boolean onResourceReady(GlideDrawable resource,
                    String model, Target<GlideDrawable> target,
                    boolean isFromMemoryCache, boolean isFirstResource) {
                    bar.setVisibility(View.GONE);
                    return false;
                }
               })
               .into(imageView);
            }
        });
    }
}