Q5.Create spinner with strings taken from resource folder (res >> value folder) and on changing the spinner value, Image will change.Android Program:Steps:
è => Insert 5 image in any format like
png or jpg
In
res -> drawble folder
Suppose 5 image name-> pic1.png , pic2.png, pic3.png , pic4.png & pic5.png
è => Now goto res -> value folder
And Edited Strings.xml
String.xml
<resources>
<string
name="app_name">prog5</string>
<string-array
name="object_text">
<item>image
1</item>
<item><font
color="red">image 2</font></item>
<item>image 3</item>
<item>image
4</item>
<item>image
5</item>
</string-array>
<integer-array
name="object_img">
<item>@drawable/pic1</item>
<item>@drawable/pic2</item>
<item>@drawable/pic3</item>
<item>@drawable/pic4</item>
<item>@drawable/pic6</item>
</integer-array>
<string
name="spin_prompt">Pick one Image</string>
</resources>
Activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context="com.kishanhaldar.prog5.MainActivity">
<TextView
android:text="Select
one for Image View : "
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"
/>
<Spinner
android:id="@+id/spin"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"
android:background="#000">
</Spinner>
<ImageView
android:id="@+id/imgview"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
MainActiviy.java
package
com.kishanhaldar.prog5;
import
android.content.res.TypedArray;
import
android.graphics.Color;
import
android.support.v7.app.AppCompatActivity;
import
android.os.Bundle;
import
android.view.Menu;
import
android.view.MenuItem;
import
android.view.View;
import
android.widget.AdapterView;
import
android.widget.ArrayAdapter;
import
android.widget.ImageView;
import
android.widget.Spinner;
import
android.widget.TextView;
public
class MainActivity extends AppCompatActivity{
private String[] listOfObjects;
private TypedArray images;
private ImageView itemImage;
@Override
protected void onCreate(Bundle
savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listOfObjects =
getResources().getStringArray(R.array.object_text);
images =
getResources().obtainTypedArray(R.array.object_img);
itemImage =
(ImageView)findViewById(R.id.imgview);
final Spinner spinner =
(Spinner)findViewById(R.id.spin);
spinner.setBackgroundColor(Color.RED);
ArrayAdapter<String>
spinnerAdapter = new ArrayAdapter<String>(getApplicationContext(),android.R.layout.simple_spinner_item,
listOfObjects);
spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(spinnerAdapter);
spinner.setOnItemSelectedListener(new
AdapterView.OnItemSelectedListener() {
@Override
public void
onItemSelected(AdapterView<?> parent, View view, int position, long id) {
itemImage.setImageResource(images.getResourceId(spinner.getSelectedItemPosition(),
-1));
}
@Override
public void
onNothingSelected(AdapterView<?> parent) {
}
});
}
} |
Q).Maximum possible number of monsters you can defeat? =>Introduction: While playing an RPG game, you were assigned to complete one of the hardest quests in this game. There are n monsters you'll need to defeat in this quest. Each monster i is described with two integer numbers - poweri and bonusi. To defeat this monster, you'll need at least poweri experience points. If you try fighting this monster without having enough experience points, you lose immediately. You will also gain bonusi experience points if you defeat this monster. You can defeat monsters in any order. The quest turned out to be very hard - you try to defeat the monsters but keep losing repeatedly. Your friend told you that this quest is impossible to complete. Knowing that, you're interested, what is the maximum possible number of monsters you can defeat? (Question difficulty level: Hardest) => Input: The first line contains an integer, n, denoting the number of monsters. The next line contains an
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