Android example source code file (LanguageDialog.java)

This example Android source code file (LanguageDialog.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

alertdialog, android, button, content, fill_parent, from, language, languagedialog, layoutinflater, layoutparams, linearlayout, onclicklistener, scrollview, translateactivity, ui, utilities, view, widget

The LanguageDialog.java Android example source code

/*
 * Copyright (C) 2008 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.beust.android.translate;

import static android.view.ViewGroup.LayoutParams.FILL_PARENT;

import com.beust.android.translate.Languages.Language;

import android.app.AlertDialog;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ScrollView;

/**
 * This dialog displays a list of languages and then tells the calling activity which language
 * was selected. 
 */
public class LanguageDialog extends AlertDialog implements OnClickListener {
    private TranslateActivity mActivity;
    private boolean mFrom;

    protected LanguageDialog(TranslateActivity activity) {
        super(activity);

        mActivity = activity;

        LayoutInflater inflater = (LayoutInflater) activity.getSystemService(
            Context.LAYOUT_INFLATER_SERVICE);
        ScrollView scrollView = (ScrollView) inflater.inflate(R.layout.language_dialog, null);
        setView(scrollView);
        
        LinearLayout layout = (LinearLayout) scrollView.findViewById(R.id.languages);
        
        LinearLayout current = null;
        Language[] languages = Language.values();
        for (int i = 0; i < languages.length; i++) {
            if (current != null) {
                layout.addView(current, new LayoutParams(FILL_PARENT, FILL_PARENT));
            }
            current = new LinearLayout(activity);
            current.setOrientation(LinearLayout.HORIZONTAL);
            Button button = (Button) inflater.inflate(R.layout.language_entry, current, false);

            Language language = languages[i];
            language.configureButton(mActivity, button);
            button.setOnClickListener(this);
            current.addView(button, button.getLayoutParams());
        }
        if (current != null) {
            layout.addView(current, new LayoutParams(FILL_PARENT, FILL_PARENT));
        }
        setTitle(" ");  // set later, but necessary to put a non-empty string here
    }

    private void log(String s) {
        Log.d(TranslateActivity.TAG, s);
    }

    public void onClick(View v) {
        mActivity.setNewLanguage((Language) v.getTag(), mFrom, true /* translate */);
        dismiss();
    }

    public void setFrom(boolean from) {
        log("From set to " + from);
        mFrom = from;
        setTitle(from ? mActivity.getString(R.string.translate_from) : mActivity.getString(R.string.translate_to)); 
    }
    
}