Demo.java

/* 
 * Copyright (C) 2008 OpenIntents.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.openintents.filemanager.demo;

import java.io.File;

import org.openintents.intents.FileManagerIntents;

import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.provider.MediaStore.Images;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class Demo extends Activity {
	
	protected static final int REQUEST_CODE_PICK_FILE_OR_DIRECTORY = 1;
	protected static final int REQUEST_CODE_GET_CONTENT = 2;
	private static final String MY_EXTRA = "org.openintents.filemanager.demo.EXTRA_MY_EXTRA";

	protected EditText mEditText;
	protected TextView mTextView;
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        mEditText = (EditText) findViewById(R.id.file_path);
        mTextView = (TextView) findViewById(R.id.info);
    }

	public void onClickOpenFile(View view) {
		openFile();
	}
	
	public void onClickSaveFile(View view) {
		saveFile();
	}
	
	public void onClickPickDirectory(View view) {
		pickDirectory();
	}

	public void onClickGetContent(View view) {
		getContent();
	}
	
	public void onClickOpenUri(View view){
		openFileUri();
	}
	
    /**
     * Opens the file manager to select a file to open.
     */
    public void openFile() {
		String fileName = mEditText.getText().toString();
		
		Intent intent = new Intent(FileManagerIntents.ACTION_PICK_FILE);
		
		// Construct URI from file name.
		File file = new File(fileName);
		intent.setData(Uri.fromFile(file));
		
		// Set fancy title and button (optional)
		intent.putExtra(FileManagerIntents.EXTRA_TITLE, getString(R.string.open_title));
		intent.putExtra(FileManagerIntents.EXTRA_BUTTON_TEXT, getString(R.string.open_button));
		intent.putExtra(MY_EXTRA, "magic");
		
		try {
			startActivityForResult(intent, REQUEST_CODE_PICK_FILE_OR_DIRECTORY);
		} catch (ActivityNotFoundException e) {
			// No compatible file manager was found.
			Toast.makeText(this, R.string.no_filemanager_installed, 
					Toast.LENGTH_SHORT).show();
		}
	}

    /**
     * Opens the file manager to select a location for saving a file.
     */
    private void saveFile() {
		String fileName = mEditText.getText().toString();
		
		Intent intent = new Intent(FileManagerIntents.ACTION_PICK_FILE);
		
		// Construct URI from file name.
		File file = new File(fileName);
		intent.setData(Uri.fromFile(file));
		
		// Set fancy title and button (optional)
		intent.putExtra(FileManagerIntents.EXTRA_TITLE, getString(R.string.save_title));
		intent.putExtra(FileManagerIntents.EXTRA_BUTTON_TEXT, getString(R.string.save_button));
		intent.putExtra(MY_EXTRA, "magic");
		
		try {
			startActivityForResult(intent, REQUEST_CODE_PICK_FILE_OR_DIRECTORY);
		} catch (ActivityNotFoundException e) {
			// No compatible file manager was found.
			Toast.makeText(this, R.string.no_filemanager_installed, 
					Toast.LENGTH_SHORT).show();
		}
	}

    /**
     * Opens the file manager to pick a directory.
     */
    private void pickDirectory() {
		String fileName = mEditText.getText().toString();
		
		// Note the different intent: PICK_DIRECTORY
		Intent intent = new Intent(FileManagerIntents.ACTION_PICK_DIRECTORY);
		
		// Construct URI from file name.
		File file = new File(fileName);
		intent.setData(Uri.fromFile(file));
		
		// Set fancy title and button (optional)
		intent.putExtra(FileManagerIntents.EXTRA_TITLE, getString(R.string.pick_directory_title));
		intent.putExtra(FileManagerIntents.EXTRA_BUTTON_TEXT, getString(R.string.pick_directory_button));
		intent.putExtra(MY_EXTRA, "magic");
		try {
			startActivityForResult(intent, REQUEST_CODE_PICK_FILE_OR_DIRECTORY);
		} catch (ActivityNotFoundException e) {
			// No compatible file manager was found.
			Toast.makeText(this, R.string.no_filemanager_installed, 
					Toast.LENGTH_SHORT).show();
		}
	}

    /**
     * Use GET_CONTENT to open a file.
     */
    public void getContent() {
		
		Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
		intent.setType("*/*");
		intent.addCategory(Intent.CATEGORY_OPENABLE);
		
		try {
			startActivityForResult(intent, REQUEST_CODE_GET_CONTENT);
		} catch (ActivityNotFoundException e) {
			// No compatible file manager was found.
			Toast.makeText(this, R.string.no_filemanager_installed, 
					Toast.LENGTH_SHORT).show();
		}
    }
    
    /**
     * Use URI to get a file
     */
    public void openFileUri(){
    	String filePath = mEditText.getText().toString();
    	Uri uri = Uri.parse("file://" + filePath);

		Intent intent = new Intent(Intent.ACTION_VIEW);
		intent.setData(uri);
		
		// optionally:
		//intent.setPackage("org.openintents.filemanager");
		
		try {
			startActivity(intent);
		} catch (ActivityNotFoundException e) {
			// No compatible file manager was found.
			Toast.makeText(this, R.string.no_filemanager_installed, 
				Toast.LENGTH_SHORT).show();
		}
    }

    /**
     * This is called after the file manager finished.
     */
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);

		mTextView.setText("");
		
		switch (requestCode) {
		case REQUEST_CODE_PICK_FILE_OR_DIRECTORY:
			if (resultCode == RESULT_OK && data != null) {
				// obtain the filename
				Uri fileUri = data.getData();
				if (fileUri != null) {
					String filePath = fileUri.getPath();
					if (filePath != null) {
						mEditText.setText(filePath);
					}					
					mTextView.setText("additional extra: " + data.getStringExtra(MY_EXTRA));
				}
			}
			break;
		case REQUEST_CODE_GET_CONTENT:
			if (resultCode == RESULT_OK && data != null) {
				String filePath = null;
				long fileSize = 0;
				String displayName = null;
				Uri uri = data.getData();
				Cursor c = getContentResolver().query(uri, new String[] {MediaStore.MediaColumns.DATA,
					MediaStore.MediaColumns.MIME_TYPE,
					MediaStore.MediaColumns.DISPLAY_NAME,
					MediaStore.MediaColumns.SIZE
				}, null, null, null);
				if (c != null && c.moveToFirst()) {
					int id = c.getColumnIndex(Images.Media.DATA);
					if (id != -1) {
						filePath = c.getString(id);
					}
					displayName = c.getString(2);
					fileSize = c.getLong(3);
				}
				if (filePath != null) {
					mEditText.setText(filePath);
					String strFileSize = getString(R.string.get_content_info,
							displayName, Long.toString(fileSize));
					mTextView.setText(strFileSize);
				}
				if (c != null && !c.isClosed()) {
					c.close();
				}
			}
		}
	}
}