Android- Explain how to get Color code from Image programmatically.
First Set Image in Bitmap :-
final Bitmap bitmap = ((BitmapDrawable)imageView.getDrawable()).getBitmap();
Then Get Touch X and Y coordinate from ImageView.
public boolean onTouch(View v, MotionEvent event) { x = (int)event.getX(); y= (int)event.getY(); return false; }
Get the color code in Hex String touch on imageView.
Integer.toHexString(bitmap.getPixel(x, y);
Get the color code in Hex String touch on imageView.
activity_main.xml
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xml version="1.0" encoding="utf-8"?> <LinearLayout 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:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Android Beginner point" android:textSize="25dp" android:textStyle="bold" android:id="@+id/textView" /> <ImageView android:layout_width="match_parent" android:layout_height="match_parent" android:src="@drawable/multicolor" android:layout_below="@+id/textView" android:layout_toRightOf="@+id/textView" android:layout_toEndOf="@+id/textView" android:id="@+id/imageView" /> </LinearLayout>
MAinActivity.java
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import android.graphics.Bitmap; import android.graphics.drawable.BitmapDrawable; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.MotionEvent; import android.view.View; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity { int x,y; TextView txtView; ColorUtils utils=new ColorUtils(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); txtView=(TextView)findViewById(R.id.textView); ImageView imageView=(ImageView)findViewById(R.id.imageView); final Bitmap bitmap = ((BitmapDrawable)imageView.getDrawable()).getBitmap(); imageView.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { x = (int)event.getX(); y= (int)event.getY(); int pixel = bitmap.getPixel(x,y); txtView.setTextColor(bitmap.getPixel( x,y)); Toast.makeText(getApplicationContext(),"#"+Integer.toHexString(bitmap.getPixel(x, y)),Toast.LENGTH_LONG).show(); return false; } }); } }
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