My application allows for the translation of 5 phrases back and forth in 3 languages - English, Chinese, and Japanese. Here is the user interface:
The user can choose the languages they want to translate to and from using the drop-down menus to the right of "From Language" and "To Language". Upon choosing a language for "From Language", radio buttons appear for the 5 phrases in the chosen language that the user is translating from.
The user can then select a phrase that they wish to translate.
After the user hits the "TRANSLATE" button, the phrase of their choice will be translated.
Here is a video demonstrating the above features, as well as translation from other languages.
package itepsilons.zhaossimpletranslator;
import android.app.Activity;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import java.util.HashMap;
public class MainActivity extends Activity {
private Spinner from_language;
private Spinner to_language;
private String [] languages;
private String language1;
private String language2;
private RadioGroup radioGroup;
private int index;
private Button button;
private static HashMap<String, String[]> words;
private TextView tw;
public void createLanguageHashMap() {
words = new HashMap<String, String[]>();
words.put("English",new String[] {"Hello", "Thank you", "Goodbye", "You're welcome", "Idiot!"});
words.put("Chinese",new String[] {"", "", "", "", "!"});
words.put("Japanese",new String[] {"", "", "", "", "!"});
languages = new String[] {"Choose a language","English", "Chinese", "Japanese"};
language1 = "";
language2 = "";
}
private void addRadioButtons(int numButtons) {
if(!language1.equals("Choose a language")) {
int j = radioGroup.getChildCount();
for (int i = 0; i < j; i++) {
radioGroup.removeViewAt(0);
}
for (int i = 0; i < numButtons; i++) {
RadioButton radioButton = new RadioButton(this);
radioButton.setLayoutParams(new RadioGroup.LayoutParams(RadioGroup.LayoutParams.WRAP_CONTENT, RadioGroup.LayoutParams.WRAP_CONTENT));
radioButton.setText(words.get(language1)[i]);
radioButton.setId(i);
radioButton.setTextSize(20);
radioGroup.addView(radioButton, i);
}
}
}
public void createFromLanguageSpinner() {
from_language = (Spinner) findViewById(R.id.spinner1);
ArrayAdapter<String> adp = new ArrayAdapter<String> (this,android.R.layout.simple_spinner_dropdown_item, languages);
from_language.setAdapter(adp);
from_language.setVisibility(View.VISIBLE);
from_language.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
language1 = parentView.getItemAtPosition(position).toString();
addRadioButtons(5);
}
@Override
public void onNothingSelected(AdapterView<?> parentView) {
return;
}
});
}
public void createToLanguageSpinner() {
to_language = (Spinner) findViewById(R.id.spinner2);
ArrayAdapter<String> adp = new ArrayAdapter<String> (this,android.R.layout.simple_spinner_dropdown_item, languages);
to_language.setAdapter(adp);
to_language.setVisibility(View.VISIBLE);
to_language.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
language2 = parentView.getItemAtPosition(position).toString();
}
@Override
public void onNothingSelected(AdapterView<?> parentView) {
return;
}
});
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
createLanguageHashMap();
createFromLanguageSpinner();
createToLanguageSpinner();
index = -1;
radioGroup = (RadioGroup) findViewById(R.id.radio_group);
radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
index = checkedId;
}
});
button = (Button) findViewById(R.id.translate);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (!language2.equals("Choose a language") && !language1.equals("Choose a language") && index != -1) {
tw = (TextView) findViewById(R.id.result);
tw.setText(words.get(language2)[index]);
}
}
});
}
@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);
}
}
<resources>
<string name="app_name">ZhaosSimpleTranslator</string>
<string name="from_language">From Language:</string>
<string name="to_language">To Language:</string>
<string name="translate">TRANSLATE</string>
<string name="select_a_phrase">Select a phrase</string>
<string name="action_settings">Settings</string>
</resources>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center_horizontal"
>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_horizontal" >
<TextView
android:text="@string/from_language"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp"/>
<Spinner
android:id="@+id/spinner1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_horizontal" >
<TextView android:text="@string/to_language"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp" />
<Spinner
android:id="@+id/spinner2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<TextView
android:text="@string/select_a_phrase"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp"/>
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/radio_group"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</RadioGroup>
<Button
android:id="@+id/translate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/translate" />
<TextView
android:id="@+id/result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp"/>
</LinearLayout>
</RelativeLayout>
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