안드로이드 파일 복사

1. 이미지 가져오기

2. URI -> path 변환

3. 안드로이드에서 파일 복사하기

package com.example.changnam.kcntest;

import android.content.ContentUris;

import android.content.Context;

import android.content.Intent;

import android.database.Cursor;

import android.graphics.drawable.Drawable;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.provider.DocumentsContract;

import android.provider.MediaStore;

import android.support.design.widget.FloatingActionButton;

import android.support.design.widget.Snackbar;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.Toolbar;

import android.util.Log;

import android.view.View;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.ImageView;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

public class MainActivity extends AppCompatActivity {

    public static final int TAKE_FROM_GALLERY = 100;

    String mStrDestFolder = Environment.getExternalStorageDirectory().getAbsolutePath()+"/Download/test/";

    ImageView imageview;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

        setSupportActionBar(toolbar);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

        fab.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)

                        .setAction("Action", null).show();

            }

        });

        imageview = (ImageView)findViewById(R.id.imageview);

        takeImage();

//        testCopy();

    }

    private void takeImage(){

        Intent intent = new Intent();

        intent.setAction(Intent.ACTION_GET_CONTENT);

        intent.setType("image/*");

        startActivityForResult(intent, TAKE_FROM_GALLERY);

    }

    /**

     * 파일 복사

     * @param strSrc

     * @param save_file

     * @return

     */

    private boolean copyFile(String strSrc , String save_file){

        File file = new File(strSrc);

        boolean result;

        if(file!=null&&file.exists()){

            try {

                FileInputStream fis = new FileInputStream(file);

                FileOutputStream newfos = new FileOutputStream(save_file);

                int readcount=0;

                byte[] buffer = new byte[1024];

                while((readcount = fis.read(buffer,0,1024))!= -1){

                    newfos.write(buffer,0,readcount);

                }

                newfos.close();

                fis.close();

            } catch (Exception e) {

                e.printStackTrace();

            }

            result = true;

        }else{

            result = false;

        }

        return result;

    }

    public String getPathFromUri(Uri uri){

        if (isExternalStorageDocument(uri)) {

            final String docId = DocumentsContract.getDocumentId(uri);

            final String[] split = docId.split(":");

            final String type = split[0];

            if ("primary".equalsIgnoreCase(type)) {

                return Environment.getExternalStorageDirectory() + "/" + split[1];

            }

            // TODO handle non-primary volumes

        }

        // DownloadsProvider

        else if (isDownloadsDocument(uri)) {

            final String id = DocumentsContract.getDocumentId(uri);

            final Uri contentUri = ContentUris.withAppendedId(

                    Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));

            return getDataColumn(this, contentUri, null, null);

        }

        // MediaProvider

        else if (isMediaDocument(uri)) {

            final String docId = DocumentsContract.getDocumentId(uri);

            final String[] split = docId.split(":");

            final String type = split[0];

            Uri contentUri = null;

            if ("image".equals(type)) {

                contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;

            } else if ("video".equals(type)) {

                contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;

            } else if ("audio".equals(type)) {

                contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;

            }

            final String selection = "_id=?";

            final String[] selectionArgs = new String[] {

                    split[1]

            };

            return getDataColumn(this, contentUri, selection, selectionArgs);

        }

        return null;

    }

    /**

     * @param uri The Uri to check.

     * @return Whether the Uri authority is ExternalStorageProvider.

     */

    public static boolean isExternalStorageDocument(Uri uri) {

        return "com.android.externalstorage.documents".equals(uri.getAuthority());

    }

    /**

     * @param uri The Uri to check.

     * @return Whether the Uri authority is DownloadsProvider.

     */

    public static boolean isDownloadsDocument(Uri uri) {

        return "com.android.providers.downloads.documents".equals(uri.getAuthority());

    }

    /**

     * @param uri The Uri to check.

     * @return Whether the Uri authority is MediaProvider.

     */

    public static boolean isMediaDocument(Uri uri) {

        return "com.android.providers.media.documents".equals(uri.getAuthority());

    }

    /**

     * Get the value of the data column for this Uri. This is useful for

     * MediaStore Uris, and other file-based ContentProviders.

     *

     * @param context The context.

     * @param uri The Uri to query.

     * @param selection (Optional) Filter used in the query.

     * @param selectionArgs (Optional) Selection arguments used in the query.

     * @return The value of the _data column, which is typically a file path.

     */

    public static String getDataColumn(Context context, Uri uri, String selection,

                                       String[] selectionArgs) {

        Cursor cursor = null;

        final String column = "_data";

        final String[] projection = {

                column

        };

        try {

            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,

                    null);

            if (cursor != null && cursor.moveToFirst()) {

                final int column_index = cursor.getColumnIndexOrThrow(column);

                return cursor.getString(column_index);

            }

        } finally {

            if (cursor != null)

                cursor.close();

        }

        return null;

    }

    @Override

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        if(resultCode == RESULT_OK){

            switch (requestCode){

                case TAKE_FROM_GALLERY:

                    Uri imageUri = data.getData();

                    Log.d("5sd6sd","imageeUri : "+imageUri);

                    String strSrcpath = getPathFromUri(imageUri);

                    String destFileName = strSrcpath.substring(strSrcpath.lastIndexOf("/"));

                    String strDestPath = mStrDestFolder+destFileName;

                    Log.d("5sd6sd", "destFileName : " + destFileName);

                    Log.d("5sd6sd","strSrcpath :"+strSrcpath);

                    Log.d("5sd6sd", "strDestPath :" + strDestPath);

                    copyFile(strSrcpath, strDestPath);

                    imageview.setImageDrawable(Drawable.createFromPath(strDestPath));

                    break;

            }

        }

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.menu_main, menu);

        return true;

    }

    @Override

    public boolean onOptionsItemSelected(MenuItem item) {

        // Handle action bar item clicks here. The action bar will

        // automatically handle clicks on the Home/Up button, so long

        // as you specify a parent activity in AndroidManifest.xml.

        int id = item.getItemId();

        //noinspection SimplifiableIfStatement

        if (id == R.id.action_settings) {

            return true;

        }

        return super.onOptionsItemSelected(item);

    }

}

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<TextView         android:id="@+id/textView"         android:text="Hello World!" android:layout_width="wrap_content"         android:layout_height="wrap_content" />     <ImageView         android:id="@+id/imageview"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:layout_below="@+id/textView"         android:background="#00ff00"         />

출처 : http://paulaner80.tistory.com/entry/%EC%95%88%EB%93%9C%EB%A1%9C%EC%9D%B4%EB%93%9C%EC%97%90%EC%84%9C-%ED%8C%8C%EC%9D%BC-%EB%B3%B5%EC%82%AC%ED%95%98%EA%B8%B0