Add blob support

README.md

@@ -5,7 +5,7 @@ A react native PDF view component (cross-platform support)
 
 ### Feature
 
-* read a PDF from url/local file/asset and can cache it.
+* read a PDF from url, blob, local file or asset and can cache it.
 * display horizontally or vertically
 * drag and zoom
 * double tap for zoom
@@ -253,11 +253,12 @@ import Pdf from 'react-native-pdf';
 export default class PDFExample extends React.Component {
     render() {
         const source = { uri: 'http://samples.leanpub.com/thereactnativebook-sample.pdf', cache: true };
-        // const source = require('./test.pdf');  // ios only
-        // const source = { uri:'bundle-assets://test.pdf' };
-
-        // const source = { uri: 'file:///sdcard/test.pdf' };
-        // const source = { uri: "data:application/pdf;base64,JVBERi0xLjcKJc..." };
+        //const source = require('./test.pdf');  // ios only
+        //const source = {uri:'bundle-assets://test.pdf' };
+        //const source = {uri:'file:///sdcard/test.pdf'};
+        //const source = {uri:"data:application/pdf;base64,JVBERi0xLjcKJc..."};
+        //const source = {uri:"content://com.example.blobs/xxxxxxxx-...?offset=0&size=xxx"};
+        //const source = {uri:"blob:xxxxxxxx-...?offset=0&size=xxx"};
 
         return (
             <View style={styles.container}>
@@ -351,8 +352,10 @@ const styles = StyleSheet.create({
 | `{uri:"data:application/pdf;base64,JVBERi0xLjcKJc..."}` | load pdf from base64 string | ✔   | ✔ | ✔ |
 | `{uri:"file:///absolute/path/to/xxx.pdf"}` | load pdf from local file system | ✔  | ✔ | ✔  |
 | `{uri:"ms-appx:///xxx.pdf"}}` | load pdf bundled with UWP app |  ✖ | ✖ | ✔ |
+| `{uri:"content://com.example.blobs/xxxxxxxx-...?offset=0&size=xxx"}` | load pdf from content URI | ✔* | ✖ | ✖ |
+| `{uri:"blob:xxxxxxxx-...?offset=0&size=xxx"}` | load pdf from blob URL | ✖ | ✔ | ✖ |
 
-
+\*) requires building React Native from source with [this patch](https://github.com/facebook/react-native/pull/31789)
 ### Methods
 * [setPage](#setPage)
 

android/src/main/java/org/wonday/pdf/PdfView.java

@@ -10,6 +10,7 @@
 
 import java.io.File;
 
+import android.content.ContentResolver;
 import android.content.Context;
 import android.view.View;
 import android.view.ViewGroup;
@@ -49,6 +50,9 @@
 import com.facebook.react.common.ReactConstants;
 
 import static java.lang.String.format;
+
+import java.io.FileNotFoundException;
+import java.io.InputStream;
 import java.lang.ClassCastException;
 
 import com.shockwave.pdfium.PdfDocument;
@@ -222,8 +226,23 @@ public void drawPdf() {
             Constants.Pinch.MINIMUM_ZOOM = this.minScale;
             Constants.Pinch.MAXIMUM_ZOOM = this.maxScale;
 
-            Configurator configurator = this.fromUri(getURI(this.path))
-                .defaultPage(this.page-1)
+            Configurator configurator;
+
+            if (this.path.startsWith("content://")) {
+                ContentResolver contentResolver = getContext().getContentResolver();
+                InputStream inputStream = null;
+                Uri uri = Uri.parse(this.path);
+                try {
+                    inputStream = contentResolver.openInputStream(uri);
+                } catch (FileNotFoundException e) {
+                    throw new RuntimeException(e.getMessage());
+                }
+                configurator = this.fromStream(inputStream);
+            } else {
+                configurator = this.fromUri(getURI(this.path));
+            }
+
+            configurator.defaultPage(this.page-1)
                 .swipeHorizontal(this.horizontal)
                 .onPageChange(this)
                 .onLoad(this)

example/android/app/src/main/AndroidManifest.xml

@@ -21,6 +21,10 @@
         </intent-filter>
       </activity>
       <activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />
+      <provider 
+        android:name="com.facebook.react.modules.blob.BlobProvider" 
+        android:authorities="@string/blob_provider_authority" 
+        android:exported="false" />
     </application>
 
 </manifest>

example/android/app/src/main/res/values/strings.xml

@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">PDFExample</string>
+    <string name="blob_provider_authority">com.pdfexample.blobs</string>
 </resources>

ios/RCTPdf/RCTPdfView.h

@@ -22,6 +22,8 @@
 
 NS_CLASS_AVAILABLE_IOS(11_0) @interface RCTPdfView : UIView <UIGestureRecognizerDelegate>
 
+- (instancetype)initWithBridge:(RCTBridge *)bridge;
+
 @property(nonatomic, strong) NSString *path;
 @property(nonatomic) int page;
 @property(nonatomic) float scale;

ios/RCTPdf/RCTPdfView.m

@@ -17,11 +17,13 @@
 #import <React/RCTEventDispatcher.h>
 #import <React/UIView+React.h>
 #import <React/RCTLog.h>
+#import <React/RCTBlobManager.h>
 #else
 #import "RCTBridgeModule.h"
 #import "RCTEventDispatcher.h"
 #import "UIView+React.h"
 #import "RCTLog.h"
+#import <RCTBlobManager.h">
 #endif
 
 #ifndef __OPTIMIZE__
@@ -39,6 +41,7 @@
 
 @implementation RCTPdfView
 {
+    RCTBridge *_bridge;
     PDFDocument *_pdfDocument;
     PDFView *_pdfView;
     PDFOutline *root;
@@ -47,11 +50,12 @@ @implementation RCTPdfView
     NSArray<NSString *> *_changedProps;
 }
 
-- (instancetype)init
+- (instancetype)initWithBridge:(RCTBridge *)bridge
 {
     self = [super init];
     if (self) {
 
+        _bridge = bridge;
         _page = 1;
         _scale = 1;
         _minScale = MIN_SCALE;
@@ -114,14 +118,23 @@ - (void)didSetProps:(NSArray<NSString *> *)changedProps
 
         if ([changedProps containsObject:@"path"]) {
 
-            NSURL *fileURL = [NSURL fileURLWithPath:_path];
 
             if (_pdfDocument != Nil) {
                 //Release old doc
                 _pdfDocument = Nil;
             }
-
-            _pdfDocument = [[PDFDocument alloc] initWithURL:fileURL];
+
+            if ([_path hasPrefix:@"blob:"]) {
+                RCTBlobManager *blobManager = [_bridge moduleForName:@"BlobModule"];
+                NSURL *blobURL = [NSURL URLWithString:_path];
+                NSData *blobData = [blobManager resolveURL:blobURL];
+                if (blobData != nil) {
+                    _pdfDocument = [[PDFDocument alloc] initWithData:blobData];
+                }
+            } else {
+                NSURL *fileURL = [NSURL fileURLWithPath:_path];
+                _pdfDocument = [[PDFDocument alloc] initWithURL:fileURL];
+            }
 
             if (_pdfDocument) {
 

ios/RCTPdf/RCTPdfViewManager.m

@@ -20,7 +20,7 @@ - (UIView *)view
 {
     if([[[UIDevice currentDevice] systemVersion] compare:@"11.0" options:NSNumericSearch] == NSOrderedDescending
        || [[[UIDevice currentDevice] systemVersion] compare:@"11.0" options:NSNumericSearch] == NSOrderedSame) {
-        return [[RCTPdfView alloc] init];
+        return [[RCTPdfView alloc] initWithBridge:self.bridge];
     } else {
         return NULL;
     }