Here's my MainActivity's XML file:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="@ id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.47"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.877" />
<ImageView
android:id="@ id/imageView"
android:layout_width="404dp"
android:layout_height="331dp"
android:layout_marginStart="3dp"
android:layout_marginTop="94dp"
android:layout_marginEnd="4dp"
android:layout_marginBottom="199dp"
app:layout_constraintBottom_toTopOf="@ id/textView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="ImageContrastCheck"
tools:srcCompat="@tools:sample/avatars" />
</androidx.constraintlayout.widget.ConstraintLayout>
And here's the Java file:
package com.wavedevelopers.myapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ImageView;
import java.util.Calendar;
import java.util.Date;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageView imageView;
Calendar cal = Calendar.getInstance();
Date now_date = null;
cal.setTime(now_date);
imageView = (ImageView)findViewById(R.id.content);
if(cal.get(Calendar.DAY_OF_WEEK) == Calendar.MONDAY)
{
imageView.setImageResource(R.drawable.a1);
}
else if(cal.get(Calendar.DAY_OF_WEEK) == Calendar.TUESDAY)
{
imageView.setImageResource(R.drawable.a2);
}
}
}
The Above code built successfully but out not displaying in the emulator, verify the above code next
NEED CODE CHANGES :
If(cal.get(Calendar.DAY_OF_WEEK) == CALENDAR.MONDAY)
This condition checks the DAY_OF_WEEK
, but I want to check both DATE_OF_MONTH
and MONTH
with the local date.
Example: If local calender date is equal to given date, display the image
CodePudding user response:
you are setting a null date into your cal
object
Date now_date = null;
change this line to
Date now_date = new Date();