添加Content Decoder

image/src/main/java/me/kareluo/imaging/IMGEditActivity.java

@@ -11,6 +11,7 @@
 import me.kareluo.imaging.core.file.IMGAssetFileDecoder;
 import me.kareluo.imaging.core.file.IMGDecoder;
 import me.kareluo.imaging.core.file.IMGFileDecoder;
+import me.kareluo.imaging.core.file.IMGContentDecoder;
 import me.kareluo.imaging.core.util.IMGUtils;
 
 import java.io.FileNotFoundException;
@@ -59,6 +60,9 @@ public Bitmap getBitmap() {
                 case "file":
                     decoder = new IMGFileDecoder(uri);
                     break;
+                case "content":
+                    decoder = new IMGContentDecoder(uri, getContentResolver());
+                    break;
             }
         }
 

image/src/main/java/me/kareluo/imaging/core/file/IMGContentDecoder.java

@@ -0,0 +1,45 @@
+package me.kareluo.imaging.core.file;
+
+import android.content.ContentResolver;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.net.Uri;
+
+import java.io.FileNotFoundException;
+import java.io.InputStream;
+
+public class IMGContentDecoder extends IMGDecoder {
+
+    private ContentResolver _resolver;
+
+    public IMGContentDecoder(Uri uri) {
+        super(uri);
+    }
+
+    public IMGContentDecoder(Uri uri,ContentResolver resolver){
+        super(uri);
+        _resolver = resolver;
+    }
+
+
+    @Override
+    public Bitmap decode(BitmapFactory.Options options) {
+        if(_resolver == null)
+            return null;
+        InputStream is;
+        try {
+            is = _resolver.openInputStream(getUri());
+        } catch (FileNotFoundException e) {
+            return null;
+        }
+        return BitmapFactory.decodeStream(is,null,options);
+    }
+
+    public ContentResolver getResolver(){
+        return _resolver;
+    }
+
+    public void setResolver(ContentResolver resolver){
+        _resolver = resolver;
+    }
+}