Example usage for android.webkit WebSettings setCacheMode

Introduction

In this page you can find the example usage for android.webkit WebSettings setCacheMode.

Prototype

public abstract void setCacheMode(@CacheMode int mode);

Source Link

Document

Overrides the way the cache is used.

Usage

From source file:com.nttec.everychan.ui.gallery.GalleryActivity.java

private void setWebView(final GalleryItemViewTag tag, final File file) {
    runOnUiThread(new Runnable() {
        private boolean oomFlag = false;

        private final ViewGroup.LayoutParams MATCH_PARAMS = new ViewGroup.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

        private void prepareWebView(WebView webView) {
            webView.setBackgroundColor(Color.TRANSPARENT);
            webView.setInitialScale(100);
            webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ECLAIR) {
                CompatibilityImpl.setScrollbarFadingEnabled(webView, true);
            }/*www. j av  a2s  .c  o  m*/

            WebSettings settings = webView.getSettings();
            settings.setBuiltInZoomControls(true);
            settings.setSupportZoom(true);
            settings.setAllowFileAccess(true);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ECLAIR_MR1) {
                CompatibilityImpl.setDefaultZoomFAR(settings);
                CompatibilityImpl.setLoadWithOverviewMode(settings, true);
            }
            settings.setUseWideViewPort(true);
            settings.setCacheMode(WebSettings.LOAD_NO_CACHE);

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
                CompatibilityImpl.setBlockNetworkLoads(settings, true);
            }

            setScaleWebView(webView);
        }

        private void setScaleWebView(final WebView webView) {
            Runnable callSetScaleWebView = new Runnable() {
                @Override
                public void run() {
                    setPrivateScaleWebView(webView);
                }
            };

            Point resolution = new Point(tag.layout.getWidth(), tag.layout.getHeight());
            if (resolution.equals(0, 0)) {
                // wait until the view is measured and its size is known
                AppearanceUtils.callWhenLoaded(tag.layout, callSetScaleWebView);
            } else {
                callSetScaleWebView.run();
            }
        }

        private void setPrivateScaleWebView(WebView webView) {
            Point imageSize = getImageSize(file);
            Point resolution = new Point(tag.layout.getWidth(), tag.layout.getHeight());

            //Logger.d(TAG, "Resolution: "+resolution.x+"x"+resolution.y);
            double scaleX = (double) resolution.x / (double) imageSize.x;
            double scaleY = (double) resolution.y / (double) imageSize.y;
            int scale = (int) Math.round(Math.min(scaleX, scaleY) * 100d);
            scale = Math.max(scale, 1);
            //Logger.d(TAG, "Scale: "+(Math.min(scaleX, scaleY) * 100d));
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ECLAIR_MR1) {
                double picdpi = (getResources().getDisplayMetrics().density * 160d) / scaleX;
                if (picdpi >= 240) {
                    CompatibilityImpl.setDefaultZoomFAR(webView.getSettings());
                } else if (picdpi <= 120) {
                    CompatibilityImpl.setDefaultZoomCLOSE(webView.getSettings());
                } else {
                    CompatibilityImpl.setDefaultZoomMEDIUM(webView.getSettings());
                }
            }

            webView.setInitialScale(scale);
            webView.setPadding(0, 0, 0, 0);
        }

        private Point getImageSize(File file) {
            BitmapFactory.Options options = new BitmapFactory.Options();
            options.inJustDecodeBounds = true;
            BitmapFactory.decodeFile(file.getAbsolutePath(), options);
            return new Point(options.outWidth, options.outHeight);
        }

        private boolean useFallback(File file) {
            String path = file.getPath().toLowerCase(Locale.US);
            if (path.endsWith(".png"))
                return false;
            if (path.endsWith(".jpg"))
                return false;
            if (path.endsWith(".gif"))
                return false;
            if (path.endsWith(".jpeg"))
                return false;
            if (path.endsWith(".webp") && Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH)
                return false;
            return true;
        }

        @Override
        public void run() {
            try {
                recycleTag(tag, false);
                WebView webView = new WebViewFixed(GalleryActivity.this);
                webView.setLayoutParams(MATCH_PARAMS);
                tag.layout.addView(webView);
                if (settings.fallbackWebView() || useFallback(file)) {
                    prepareWebView(webView);
                    webView.loadUrl(Uri.fromFile(file).toString());
                } else {
                    JSWebView.setImage(webView, file);
                }
                tag.thumbnailView.setVisibility(View.GONE);
                tag.loadingView.setVisibility(View.GONE);
                tag.layout.setVisibility(View.VISIBLE);
            } catch (OutOfMemoryError oom) {
                System.gc();
                Logger.e(TAG, oom);
                if (!oomFlag) {
                    oomFlag = true;
                    run();
                } else
                    showError(tag, getString(R.string.error_out_of_memory));
            }
        }

    });
}

---

From source file:nya.miku.wishmaster.ui.GalleryActivity.java

private void setWebView(final GalleryItemViewTag tag, final File file) {
    runOnUiThread(new Runnable() {
        private boolean oomFlag = false;

        private final ViewGroup.LayoutParams MATCH_PARAMS = new ViewGroup.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

        private void prepareWebView(WebView webView) {
            webView.setBackgroundColor(Color.TRANSPARENT);
            webView.setInitialScale(100);
            webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ECLAIR) {
                CompatibilityImpl.setScrollbarFadingEnabled(webView, true);
            }//from  www. jav a  2  s  . c om

            WebSettings settings = webView.getSettings();
            settings.setBuiltInZoomControls(true);
            settings.setSupportZoom(true);
            settings.setAllowFileAccess(true);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ECLAIR_MR1) {
                CompatibilityImpl.setDefaultZoomFAR(settings);
                CompatibilityImpl.setLoadWithOverviewMode(settings, true);
            }
            settings.setUseWideViewPort(true);
            settings.setCacheMode(WebSettings.LOAD_NO_CACHE);

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
                CompatibilityImpl.setBlockNetworkLoads(settings, true);
            }

            setScaleWebView(webView);
        }

        private void setScaleWebView(final WebView webView) {
            Runnable callSetScaleWebView = new Runnable() {
                @Override
                public void run() {
                    setPrivateScaleWebView(webView);
                }
            };

            Point resolution = new Point(tag.layout.getWidth(), tag.layout.getHeight());
            if (resolution.equals(0, 0)) {
                // wait until the view is measured and its size is known
                AppearanceUtils.callWhenLoaded(tag.layout, callSetScaleWebView);
            } else {
                callSetScaleWebView.run();
            }
        }

        private void setPrivateScaleWebView(WebView webView) {
            Point imageSize = getImageSize(file);
            Point resolution = new Point(tag.layout.getWidth(), tag.layout.getHeight());

            //Logger.d(TAG, "Resolution: "+resolution.x+"x"+resolution.y);
            double scaleX = (double) resolution.x / (double) imageSize.x;
            double scaleY = (double) resolution.y / (double) imageSize.y;
            int scale = (int) Math.round(Math.min(scaleX, scaleY) * 100d);
            scale = Math.max(scale, 1);
            //Logger.d(TAG, "Scale: "+(Math.min(scaleX, scaleY) * 100d));
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ECLAIR_MR1) {
                double picdpi = (getResources().getDisplayMetrics().density * 160d) / scaleX;
                if (picdpi >= 240) {
                    CompatibilityImpl.setDefaultZoomFAR(webView.getSettings());
                } else if (picdpi <= 120) {
                    CompatibilityImpl.setDefaultZoomCLOSE(webView.getSettings());
                } else {
                    CompatibilityImpl.setDefaultZoomMEDIUM(webView.getSettings());
                }
            }

            webView.setInitialScale(scale);
            webView.setPadding(0, 0, 0, 0);
        }

        private Point getImageSize(File file) {
            BitmapFactory.Options options = new BitmapFactory.Options();
            options.inJustDecodeBounds = true;
            BitmapFactory.decodeFile(file.getAbsolutePath(), options);
            return new Point(options.outWidth, options.outHeight);
        }

        private boolean useFallback(File file) {
            String path = file.getPath().toLowerCase(Locale.US);
            if (path.endsWith(".png"))
                return false;
            if (path.endsWith(".jpg"))
                return false;
            if (path.endsWith(".gif"))
                return false;
            if (path.endsWith(".jpeg"))
                return false;
            if (path.endsWith(".webp") && Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH)
                return false;
            return true;
        }

        @Override
        public void run() {
            try {
                recycleTag(tag, false);
                WebView webView = new WebViewFixed(GalleryActivity.this);
                webView.setLayoutParams(MATCH_PARAMS);
                tag.layout.addView(webView);
                if (settings.fallbackWebView() || useFallback(file)) {
                    prepareWebView(webView);
                    webView.loadUrl(Uri.fromFile(file).toString());
                } else {
                    JSWebView.setImage(webView, file);
                }
                tag.thumbnailView.setVisibility(View.GONE);
                tag.loadingView.setVisibility(View.GONE);
                tag.layout.setVisibility(View.VISIBLE);
            } catch (OutOfMemoryError oom) {
                MainApplication.freeMemory();
                Logger.e(TAG, oom);
                if (!oomFlag) {
                    oomFlag = true;
                    run();
                } else
                    showError(tag, getString(R.string.error_out_of_memory));
            }
        }

    });
}

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