blur after moveTo(newX, newY);

[nubuntu]

I use GYROSCOPE sensor to swipe & scroll pdfview,

bellow my pdfview init ` pdfView = (PDFView)activity.findViewById(resource_layout); pdfView.setLayerType(View.LAYER_TYPE_HARDWARE,null); pdfView.setDrawingCacheEnabled(true); pdfView.enableRenderDuringScale(false); pdfView.useBestQuality(true);

    InputStream inStream = activity.getResources().openRawResource(resource_raw);

    pdfView.fromStream(inStream)
            .defaultPage(0)
            .onPageChange(this)
            .enableDoubletap(false)
            .enableAnnotationRendering(true)
            .onLoad(this)
            .onPageScroll(this)
            .scrollHandle(new DefaultScrollHandle(activity))
            .load();

`

on loadcomplete I set zoom to 3

@Override public void loadComplete(int nbPages) { pdfView.zoomTo(3); }

when pdfview zoom to 3, it works well,

but when I scroll with sensor ` @Override public void onSensorChanged(SensorEvent event) { float valuey = event.values[0]; float valuex = event.values[1]; valuey = valuey 50; valuex = valuex 50;

    smoothedX       = smooth(valuex, smoothedX);
    valuex          = smoothedX;
    smoothedY       = smooth(valuey, smoothedY);
    valuey          = smoothedY;

    float baseX = pdfView.getCurrentXOffset();
    float baseY = pdfView.getCurrentYOffset();
    if(abs(valuex)>3 || abs(valuey)>3){
        baseY += valuey;
        baseX -= valuex;
        pdfView.moveTo(baseX, baseY);
    }
}`

pdf move to point x & y correctly , but display is blur

please help...

[1stmetro]

When I had these issues I changed the constants, have a play with these.

[nubuntu]

@1stmetro how to change the constants??

[1stmetro]

Constant.blah

Think there listed on main page

[barteksc]

@nubuntu Is this issue resolved?

[nubuntu]

not yet

[barteksc]

You may try using pdfView.loadPages() after .moveTo()

[nubuntu]

application has stopped after adding pdfView.loadPages() , here my full source ` public class MainActivity extends AppCompatActivity{

private ConstraintLayout content;
private PdfViewer PdfViewer;
private com.example.nubuntu.pdfviewer.tools.PdfViewer pdfView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    content = (ConstraintLayout) findViewById(R.id.content);
    pdfView = new PdfViewer(this,R.id.pdfView,R.raw.pdf);
}

} public class PdfViewer implements OnPageChangeListener, OnLoadCompleteListener, OnPageScrollListener, SensorEventListener {

private final Activity activity;
private SensorManager mSensorManager;
private Sensor  mSensor;
private PDFView pdfView;
private float smoothedX;
private float smoothedY;

public PdfViewer(Activity activity, int resource_layout, int resource_raw) {
    this.activity = activity;
    pdfView = (PDFView)activity.findViewById(resource_layout);
    pdfView.setLayerType(View.LAYER_TYPE_HARDWARE,null);
    pdfView.setDrawingCacheEnabled(true);
    pdfView.enableRenderDuringScale(false);
    pdfView.useBestQuality(true);
    pdfView.doRenderDuringScale();

    InputStream inStream = activity.getResources().openRawResource(resource_raw);

    pdfView.fromStream(inStream)
            .defaultPage(0)
            .onPageChange(this)
            .enableDoubletap(false)
            .enableAnnotationRendering(true)
            .onLoad(this)
            .onPageScroll(this)
            .scrollHandle(new DefaultScrollHandle(activity))
            .load();

    this.init_sensor();
}

private void init_sensor() {
    mSensorManager  = (SensorManager) this.activity.getSystemService(SENSOR_SERVICE);
    mSensor         = mSensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);
    mSensorManager.registerListener(this, mSensor, SensorManager.SENSOR_DELAY_GAME);
}

@Override
public void onPageChanged(int page, int pageCount) {

}

@Override
public void loadComplete(int nbPages) {
    pdfView.zoomTo(3);
}

@Override
public void onPageScrolled(int page, float positionOffset) {
    pdfView.invalidate();
    Log.d("onPageScroll", String.valueOf(page));
    Log.d("onPageScrollOffset", String.valueOf(positionOffset));
}

@Override
public void onSensorChanged(SensorEvent event) {
    float valuey    = event.values[0];
    float valuex    = event.values[1];
    valuey          = valuey * 50;
    valuex          = valuex * 50;

    smoothedX       = smooth(valuex, smoothedX);
    valuex          = smoothedX;
    smoothedY       = smooth(valuey, smoothedY);
    valuey          = smoothedY;

    float baseX = pdfView.getCurrentXOffset();
    float baseY = pdfView.getCurrentYOffset();
    if(abs(valuex)>3 || abs(valuey)>3){
        baseY += valuey;
        baseX -= valuex;
        pdfView.moveTo(baseX, baseY);
        pdfView.loadPages();
    }
}

@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {

}

static float smooth(float input, float output) {
    float ALPHA = 0.2f;
    return (int) (output + ALPHA * (input - output));
}

int getDeviceHeight() {
    WindowManager wm = (WindowManager) activity.getSystemService(WINDOW_SERVICE);
    Display display = wm.getDefaultDisplay();
    Point size = new Point();
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
        display.getSize(size);
    } else {
        display.getHeight();
    }
    return size.y;

}

} `

[barteksc]

Application has stopped because of some reason, show logs

[nubuntu]

here's log cat error message

06-06 20:12:28.050 19220-19311/com.example.nubuntu.pdfviewer E/AndroidRuntime: FATAL EXCEPTION: PDF renderer Process: com.example.nubuntu.pdfviewer, PID: 19220 java.lang.OutOfMemoryError: Failed to allocate a 262156 byte allocation with 16208 free bytes and 15KB until OOM at dalvik.system.VMRuntime.newNonMovableArray(Native Method) at android.graphics.Bitmap.nativeCreate(Native Method) at android.graphics.Bitmap.createBitmap(Bitmap.java:831) at android.graphics.Bitmap.createBitmap(Bitmap.java:808) at android.graphics.Bitmap.createBitmap(Bitmap.java:775) at com.github.barteksc.pdfviewer.RenderingHandler.proceed(RenderingHandler.java:96) at com.github.barteksc.pdfviewer.RenderingHandler.handleMessage(RenderingHandler.java:71) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.os.HandlerThread.run(HandlerThread.java:61)

[nubuntu]

when I run moveTo in loadComplete, it rendered correctly

public void loadComplete(int nbPages) { pdfView.zoomTo(3); pdfView.moveTo(-2000,-50); }

but when I do onSensorChanged, it won't rendered ` public void onSensorChanged(SensorEvent event) { float valuey = event.values[0]; float valuex = event.values[1]; valuey = valuey 50; valuex = valuex 50;

    smoothedX       = smooth(valuex, smoothedX);
    valuex          = smoothedX;
    smoothedY       = smooth(valuey, smoothedY);
    valuey          = smoothedY;

    float baseX = pdfView.getCurrentXOffset();
    float baseY = pdfView.getCurrentYOffset();
    if(abs(valuex)>3 || abs(valuey)>3){
        baseY += valuey;
        baseX -= valuex;

        pdfView.moveTo(baseX, baseY);
    }
}

`

[YuriyBereguliak]

I have this problem too. Have you found any solution for this? Library version: 3.0.0-beta.5 Please, give me an answer.

[ghost]

Run in debug mode and check your grids. You'll probably find that you don't have grids covering everything. When this happens the places without a grid will display the "thumbnail" low res version of the page that lives behind the grids.

If you zoom in and then back out you'll see a lot of tiny grids are created but not release. You have a maximum amount of these grids to use so when you run out you just get a blur. I worked around this issue by clearing the cache after it hit its max limit so that it could regenerate the larger grids again.

[YuriyBereguliak]

I just using .loadPages() method after moveTo or zoomTo. And after that all this small grids releases.