MainActivity.java
Код: Выделить всё
package com.example.cris.randomit;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import java.util.Random;
import org.w3c.dom.Text;
public class MainActivity extends AppCompatActivity implements OnClickListener {
EditText etVal1;
EditText etVal2;
TextView textView;
TextView textView1;
TextView tvResult;
Button button;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
textView = (TextView) findViewById(R.id.first_value);
textView1 = (TextView) findViewById(R.id.last_value);
button = (Button) findViewById(R.id.btn_random);
etVal1 = (EditText) findViewById(R.id.editTextFirst);
etVal2 = (EditText) findViewById(R.id.editTextLast);
tvResult = (TextView) findViewById(R.id.resultValue);
button.setOnClickListener(this);
}
@Override
public void onClick(View v) {
int num1 = 0;
int num2 = 0;
if(TextUtils.isEmpty(etVal1.getText().toString())||TextUtils.isEmpty(etVal2.getText().toString()))
{
return;
}
num1 = Integer.parseInt(etVal1.getText().toString());
num2 = Integer.parseInt(etVal2.getText().toString());
switch (v.getId()) {
case R.id.btn_random:
int randomResult = (int) (Math.random() * (num2 - num1)) + num1;
tvResult.setText(randomResult);
break;
}
}
}
Код: Выделить всё
<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">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/first_textView"
android:id="@+id/first_value"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Last Value"
android:id="@+id/last_value"
android:layout_marginTop="82dp"
android:layout_below="@+id/first_value"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/editTextFirst"
android:layout_toEndOf="@+id/first_value"
android:layout_above="@+id/last_value" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/editTextLast"
android:layout_alignBottom="@+id/last_value"
android:layout_toEndOf="@+id/last_value" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/btn_text"
android:id="@+id/btn_random"
android:layout_marginTop="71dp"
android:layout_below="@+id/editTextLast"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/result_textView"
android:id="@+id/textView"
android:layout_below="@+id/btn_random"
android:layout_alignParentStart="true"
android:layout_marginTop="62dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="@+id/resultValue"
android:layout_alignBottom="@+id/textView"
android:layout_alignParentEnd="true"
android:layout_toEndOf="@+id/textView" />
</RelativeLayout>