not able to zoom images with photoview library

Question

I'm using PhotoView library from here. It is not giving any error but I'm not able to zoom images. Nothing happens on trying to zoom image.I am not getting any errors from build.gradle too. How do I fix that?

FullImageActivity.java:

public class FullImageActivity extends AppCompatActivity {
    int position;
    int folderPosition;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_full_image);
        Intent i = getIntent();
        PhotoView photoView = (PhotoView) findViewById(R.id.photo_view);


        // Selected image id
        position = i.getExtras().getInt("id");
        folderPosition = i.getExtras().getInt("folderPosition");
        Bundle extras = getIntent().getExtras();
        String value = extras.getString("abc");

        Glide.with(FullImageActivity.this)
                .load(value)
                .skipMemoryCache(false)
                .into(photoView);

        ViewPager mViewPager = (ViewPager) findViewById(R.id.viewpager);
        mViewPager.setAdapter(new TouchImageAdapter(this,al_images, folderPosition));
        mViewPager.setCurrentItem(position);
    }
}

activity_full_image.xml:

<?xml version="1.0" encoding="utf-8"?>

     <LinearLayout
         xmlns:android="http://schemas.android.com/apk/res/android"
         android:id="@+id/jazzy_pager"
         android:layout_width="match_parent"
         android:layout_height="match_parent">


     <android.support.v4.view.ViewPager
         android:id="@+id/viewpager"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content" />

     <com.github.chrisbanes.photoview.PhotoView
         android:id="@+id/photo_view"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layout_gravity="center"
         android:scaleType="centerCrop"/>


</LinearLayout>

build.gradle:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion '25.0.3'
    defaultConfig {
        applicationId "com.example.dell_1.Myapp3"
        minSdkVersion 14
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    sourceCompatibility = '1.7'
    targetCompatibility = '1.7'

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    productFlavors {
    }
}


dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7'
    compile 'com.android.support:support-annotations:25.3.1'
    compile 'com.ss.bannerslider:bannerslider:1.8.0'
    compile 'com.github.chrisbanes:PhotoView:2.0.0'
    compile 'com.github.barteksc:android-pdf-viewer:2.7.0-beta.1'
    compile 'com.github.bumptech.glide:glide:3.8.0'
    compile 'com.android.support:design:25.3.1'
    compile 'com.android.support:support-v4'
    compile 'com.squareup.picasso:picasso:2.3.2'
    compile 'com.nineoldandroids:library:2.4.0'
    compile 'com.daimajia.slider:library:1.1.5@aar'
    testCompile 'junit:junit:4.12'
    compile 'org.jetbrains:annotations-java5:15.0'
}

Answer 1

try this code:

  Glide.with(FullImageActivity.this)
                    .load(value)
                    .asBitmap()
                    .diskCacheStrategy(DiskCacheStrategy.SOURCE)
                    .into(new SimpleTarget<Bitmap>() {
                        @Override
                        public void onResourceReady(Bitmap resource, GlideAnimation<? super Bitmap> glideAnimation) {
                            photoView.setImageBitmap(resource);
                        }
                    });

Answer 2

Try using Picasso library.

Picasso.with(context)
    .load(url)
    .placeholder(R.drawable.user_placeholder)
    .error(R.drawable.user_placeholder_error)
    .into(imageView);

According to this article

Picasso downloads the image and stores the full-size image (in my case the image resolution was 1160*750) in the cache and whenever we ask for the same image, it will return the full-size image and resize them to fit into the ImageView in real time.

On the other hand, Glide works differently. Glide downloads the image from the given URL, resize it to the size of the image view and stores it to the disk cache.

You are facing problem with zoom as Glide resized the image. So using Picasso might solve your problem.

Answer 3

Try this way, it will help you

public class ImageView_Main extends Activity {
private ImageViewTouch ivLargeImage;
private Bitmap myBitmap;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.image_view);
ivLargeImage = (ImageViewTouch) findViewById(R.id.ivLargeImageView);

// if image size is too large.Then scale image.
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;

                // provide image path for create Bitmap from image.
                // myBitmap = BitmapFactory.decodeFile( //provide here image file path//);
//Or
myBitmap = BitmapFactory.decodeResource(//provider here resource //);

if (options.outWidth > 3000 || options.outHeight > 2000) {
options.inSampleSize = 4;
} else if (options.outWidth > 2000 || options.outHeight > 1500) {
options.inSampleSize = 3;
} else if (options.outWidth > 1000 || options.outHeight > 1000) {
options.inSampleSize = 2;
}
options.inJustDecodeBounds = false;

myBitmap = BitmapFactory.decodeResource//provider here resource //);
ivLargeImage.setImageBitmapReset(myBitmap, 0, true);
   }
}

http://www.theappguruz.com/blog/android-pinch-zoom