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Android example source code file (ExternalMediaFormatActivity.java)

This example Android source code file (ExternalMediaFormatActivity.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

alertactivity, android, app, broadcastreceiver, content, externalmediaformatactivity, imountservice, intentfilter, os, override, positive_button, remoteexception, string, util, utilities

The ExternalMediaFormatActivity.java Android example source code

/*
 * Copyright (C) 2007 Google Inc.
 *
 * 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 com.android.internal.app;

import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.storage.IMountService;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.Environment;
import android.util.Log;

/**
 * This activity is shown to the user to confirm formatting of external media.
 * It uses the alert dialog style. It will be launched from a notification, or from settings
 */
public class ExternalMediaFormatActivity extends AlertActivity implements DialogInterface.OnClickListener {

    private static final int POSITIVE_BUTTON = AlertDialog.BUTTON_POSITIVE;

    /** Used to detect when the media state changes, in case we need to call finish() */
    private BroadcastReceiver mStorageReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            Log.d("ExternalMediaFormatActivity", "got action " + action);

            if (action == Intent.ACTION_MEDIA_REMOVED ||
                action == Intent.ACTION_MEDIA_CHECKING ||
                action == Intent.ACTION_MEDIA_MOUNTED ||
                action == Intent.ACTION_MEDIA_SHARED) {
                finish();
            }
        }
    };
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Log.d("ExternalMediaFormatActivity", "onCreate!");
        // Set up the "dialog"
        final AlertController.AlertParams p = mAlertParams;
        p.mIconId = com.android.internal.R.drawable.stat_sys_warning;
        p.mTitle = getString(com.android.internal.R.string.extmedia_format_title);
        p.mMessage = getString(com.android.internal.R.string.extmedia_format_message);
        p.mPositiveButtonText = getString(com.android.internal.R.string.extmedia_format_button_format);
        p.mPositiveButtonListener = this;
        p.mNegativeButtonText = getString(com.android.internal.R.string.cancel);
        p.mNegativeButtonListener = this;
        setupAlert();
    }

    @Override
    protected void onResume() {
        super.onResume();

        IntentFilter filter = new IntentFilter();
        filter.addAction(Intent.ACTION_MEDIA_REMOVED);
        filter.addAction(Intent.ACTION_MEDIA_CHECKING);
        filter.addAction(Intent.ACTION_MEDIA_MOUNTED);
        filter.addAction(Intent.ACTION_MEDIA_SHARED);
        registerReceiver(mStorageReceiver, filter);
    }

    @Override
    protected void onPause() {
        super.onPause();
        
        unregisterReceiver(mStorageReceiver);
    }

    /**
     * {@inheritDoc}
     */
    public void onClick(DialogInterface dialog, int which) {

        if (which == POSITIVE_BUTTON) {
            IMountService mountService = IMountService.Stub.asInterface(ServiceManager
                .getService("mount"));
            if (mountService != null) {
                try {
                    mountService.formatVolume(Environment.getExternalStorageDirectory().toString());
                } catch (RemoteException e) {
                }
            }
        }

        // No matter what, finish the activity
        finish();
    }
}

Other Android examples (source code examples)

Here is a short list of links related to this Android ExternalMediaFormatActivity.java source code file:

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