MainActivity:

public class MainActivity extends AppCompatActivity {
    private ImageView imageView;
    private Dialog dialog;
    private ImageView image;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();

        //小图的点击事件（弹出大图）
        imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.show();
            }
        });

    }

    private void init() {
        imageView = (ImageView) findViewById(R.id.image);

        //展示在dialog上面的大图
        dialog = new Dialog(MainActivity.this,R.style.FullActivity);

        WindowManager.LayoutParams attributes = getWindow().getAttributes();
        attributes.width = WindowManager.LayoutParams.MATCH_PARENT;
        attributes.height = WindowManager.LayoutParams.MATCH_PARENT;
        dialog.getWindow().setAttributes(attributes);

        image = getImageView();
        dialog.setContentView(image);

        //大图的点击事件（点击让他消失）
        image.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });

    }

    //动态的ImageView
    private ImageView getImageView(){
        ImageView imageView = new ImageView(this);

        //宽高
        imageView.setLayoutParams(new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));

        //imageView设置图片
        @SuppressLint("ResourceType") InputStream is = getResources().openRawResource(R.drawable.lala);

        Drawable drawable = BitmapDrawable.createFromStream(is, null);
        imageView.setImageDrawable(drawable);

        return imageView;
    }
}

布局文件:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ImageView
        android:id="@+id/image"
        android:src="@drawable/lala"
        android:layout_centerInParent="true"
        android:layout_width="200dp"
        android:layout_height="200dp" />

</LinearLayout>

style:

<style name="FullActivity" parent="AppTheme">
        <item name="windowNoTitle">true</item>
        <item name="android:windowFullscreen">true</item>
</style>

效果图:

没点击:

点击后: