ギャラリーから「送信/共有メニュー」を使用して、ストレージ上の事前定義された非表示フォルダーに画像をコピーし、ユーザーギャラリーからファイルを削除する作業コードを次に示します。
SendToActivity.java
package com.company.privategallery;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.Gravity;
import android.view.KeyEvent;
import android.widget.Toast;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class SendToActivity extends Activity {
private static final int SELECT_PICTURE = 0;
//Generating Random Number to use as a unique file name
static int random = (int)Math.ceil(Math.random()*100000000);
private static String fname = Integer.toString(random);
private static String selectedImagePath;
//Getting the external Path to the Storage
private static String ExternalStorageDirectoryPath = Environment.getExternalStorageDirectory().getAbsolutePath();
//Setting a directory that is already created on the Storage to copy the file to.
private static String targetPath = ExternalStorageDirectoryPath + "/DCIM/privgal/.nomedia/";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//get the received intent
Intent receivedIntent = getIntent();
//get the action
String receivedType = receivedIntent.getType();
//make sure it's an action and type we can handle
if(receivedType.startsWith("image/")){
//get the uri of the received image
Uri receivedUri = (Uri)receivedIntent.getParcelableExtra(Intent.EXTRA_STREAM);
selectedImagePath = getPath(receivedUri);
System.out.println("Image Path : " + selectedImagePath);
//check we have a uri
if (receivedUri != null) {
//Copy the picture
try {
copyFile(selectedImagePath, targetPath + fname + ".jpg");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
startGallery();
deleteFile();
onDestroy();
}
}
}
public void copyFile(String selectedImagePath, String string) throws IOException {
InputStream in = new FileInputStream(selectedImagePath);
OutputStream out = new FileOutputStream(string);
// Transfer bytes from in to out
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
Toast customToast = new Toast(getBaseContext());
customToast = Toast.makeText(getBaseContext(), "Image Transferred", Toast.LENGTH_LONG);
customToast.setGravity(Gravity.CENTER|Gravity.CENTER, 0, 0);
customToast.show();
}
private void startGallery() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
startActivityForResult(intent, SELECT_PICTURE);
}
// Delete the file that was copied over
private void deleteFile() {
File fileToDelete = new File(selectedImagePath);
boolean fileDeleted = fileToDelete.delete();
// request scan
Intent scanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
scanIntent.setData(Uri.fromFile(fileToDelete));
sendBroadcast(scanIntent);
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory())));
finish();
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
@Override
public void onDestroy() {
super.onDestroy();
android.os.Process.killProcess(android.os.Process.myPid());
finish();
}
}
Manafest に追加されたアクティビティと権限
権限:
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE"> </uses-permission>
<uses-permission android:name="android.permission.READ_INTERNAL_STORAGE"> </uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"></uses-permission>
アクティビティ：
<activity android:name="com.company.privategallery.SendToActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="image/*" />
</intent-filter>
</activity>