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Adds interactive user interface for android.

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This commit is contained in:
Grzegorz Adam Hankiewicz
2012-09-08 22:08:45 +02:00
parent 3492bb7744
commit f6e7aebbd9
2 changed files with 116 additions and 10 deletions
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72
examples/cross_calculator/android/res/layout/cross_calculator.xml Normal file
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@@ -0,0 +1,72 @@
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/RelativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="Crossplatform Nimrod calculator"
android:textSize="20dip" >
</TextView>
<TextView
android:id="@+id/value_a"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/title"
android:text="Value A: " >
</TextView>
<EditText
android:id="@+id/edit_text_a"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@+id/title"
android:ems="10"
android:inputType="number" />
<TextView
android:id="@+id/value_b"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/edit_text_a"
android:text="Value B: " >
</TextView>
<EditText
android:id="@+id/edit_text_b"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@+id/edit_text_a"
android:ems="10"
android:inputType="number" />
<Button
android:id="@+id/add_button"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/edit_text_b"
android:scrollbarAlwaysDrawVerticalTrack="false"
android:selectAllOnFocus="false"
android:text="Add!"
android:visibility="visible" />
<TextView
android:id="@+id/result_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/add_button" />
</RelativeLayout>

54
examples/cross_calculator/android/src/com/github/nimrod/crosscalculator/CrossCalculator.java
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@@ -1,27 +1,61 @@
package com.github.nimrod.crosscalculator;
import android.app.Activity;
import android.widget.TextView;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class CrossCalculator extends Activity
{
private static final String TAG = "CrossCalculator";
private TextView result_text;
private EditText edit_text_a, edit_text_b;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.cross_calculator);
/* Create a TextView and set its content.
* the text is retrieved by calling a native
* function.
*/
TextView tv = new TextView(this);
final int a = 4;
final int b = 18;
final Button button = (Button)findViewById(R.id.add_button);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) { addButtonClicked(); } });
result_text = (TextView)findViewById(R.id.result_text);
edit_text_a = (EditText)findViewById(R.id.edit_text_a);
edit_text_b = (EditText)findViewById(R.id.edit_text_b);
}
/** Handles clicks on the addition button.
* Reads the values form the input fields and performs the calculation.
*/
private void addButtonClicked()
{
int a = 0, b = 0;
String errors = "";
final String a_text = edit_text_a.getText().toString();
final String b_text = edit_text_b.getText().toString();
try {
a = Integer.valueOf(a_text, 10);
} catch (NumberFormatException e) {
errors += "Can't parse a value '" + a_text + "'. ";
}
try {
b = Integer.valueOf(b_text, 10);
} catch (NumberFormatException e) {
errors += "Can't parse b value '" + b_text + "'";
}
final int c = myAdd(a, b);
tv.setText("myAdd(" + a + ", " + b + ") = " + c);
setContentView(tv);
result_text.setText("myAdd(" + a + ", " + b + ") = " + c);
if (errors.length() > 0) {
Log.e(TAG, errors);
Toast.makeText(this, errors, Toast.LENGTH_SHORT).show();
}
}
/* A native method that is implemented by the