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How to make a background 20% transparent on Android
If you want to give transparent background for your view, This example demonstrate about How to make a background 20% transparent on Android.
All hex value from 100% to 0% alpha
- 100% — FF
- 99% — FC
- 98% — FA
- 97% — F7
- 96% — F5
- 95% — F2
- 94% — F0
- 93% — ED
- 92% — EB
- 91% — E8
- 90% — E6
- 89% — E3
- 88% — E0
- 87% — DE
- 86% — DB
- 85% — D9
- 84% — D6
- 83% — D4
- 82% — D1
- 81% — CF
- 80% — CC
- 79% — C9
- 78% — C7
- 77% — C4
- 76% — C2
- 75% — BF
- 74% — BD
- 73% — BA
- 72% — B8
- 71% — B5
- 70% — B3
- 69% — B0
- 68% — AD
- 67% — AB
- 66% — A8
- 65% — A6
- 64% — A3
- 63% — A1
- 62% — 9E
- 61% — 9C
- 60% — 99
- 59% — 96
- 58% — 94
- 57% — 91
- 56% — 8F
- 55% — 8C
- 54% — 8A
- 53% — 87
- 52% — 85
- 51% — 82
- 50% — 80
- 49% — 7D
- 48% — 7A
- 47% — 78
- 46% — 75
- 45% — 73
- 44% — 70
- 43% — 6E
- 42% — 6B
- 41% — 69
- 40% — 66
- 39% — 63
- 38% — 61
- 37% — 5E
- 36% — 5C
- 35% — 59
- 34% — 57
- 33% — 54
- 32% — 52
- 31% — 4F
- 30% — 4D
- 29% — 4A
- 28% — 47
- 27% — 45
- 26% — 42
- 25% — 40
- 24% — 3D
- 23% — 3B
- 22% — 38
- 21% — 36
- 20% — 33
- 19% — 30
- 18% — 2E
- 17% — 2B
- 16% — 29
- 15% — 26
- 14% — 24
- 13% — 21
- 12% — 1F
- 11% — 1C
- 10% — 1A
- 9% — 17
- 8% — 14
- 7% — 12
- 6% — 0F
- 5% — 0D
- 4% — 0A
- 3% — 08
- 2% — 05
- 1% — 03
- 0% — 00
For example, if you want to give 20% transparent background for yellow color (#FFFF00). So your background color would be #33FFFF00
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/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:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" android:background="#33FFFF00" android:gravity="center" android:orientation="vertical"> <TextView android:id="@+id/text" android:textSize="18sp" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout>
In the above code we have give 20% transparent yellow background for text view.
Step 3 − Add the following code to src/MainActivity.java
package com.example.andy.myapplication;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import org.w3c.dom.Text;
import java.util.Locale;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView textView=findViewById(R.id.text);
textView.setText("Tutorialspoint india pvt ltd");
}
}Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run
icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −
In the above result, it is not pure yellow color. it shows 20% transparent yellow color
Click here to download the project code
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