应用程式中的Android Image Viewer

一种方法是实现上下文提供程序，以使其他应用程序可以访问您的数据。

创建一个包含以下内容的新类：

public class FileContentProvider extends ContentProvider {   private static final String URI_PREFIX = "content://uk.co.ashtonbrsc.examplefilecontentprovider";   public static String constructUri(String url) {       Uri uri = Uri.parse(url);       return uri.isAbsolute() ? url : URI_PREFIX + url;   }   @Override   public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {       File file = new File(uri.getPath());       ParcelFileDescriptor parcel = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);       return parcel;   }   @Override   public boolean onCreate() {       return true;   }   @Override   public int delete(Uri uri, String s, String[] as) {       throw new UnsupportedOperationException("Not supported by this provider");   }   @Override   public String getType(Uri uri) {   throw new UnsupportedOperationException("Not supported by this provider");   }   @Override   public Uri insert(Uri uri, ContentValues contentvalues) {       throw new UnsupportedOperationException("Not supported by this provider");   }   @Override   public Cursor query(Uri uri, String[] as, String s, String[] as1, String s1) {       throw new UnsupportedOperationException("Not supported by this provider");   }   @Override   public int update(Uri uri, ContentValues contentvalues, String s, String[] as) {       throw new UnsupportedOperationException("Not supported by this provider");   }}

将内容提供者添加到您的AndroidManifest.xml中：

<provider android:name=".FileContentProvider" android:authorities="uk.co.ashtonbrsc.examplefilecontentprovider" />

然后，您应该可以

"content://uk.co.ashtonbrsc.examplefilecontentprovider/" + the fullpath to the image