Make library available for API level 21 and above

Author: hexdecimal16

app/build.gradle

@@ -6,7 +6,7 @@ android {
 
     defaultConfig {
         applicationId "com.dhairytripathi.edittextpin"
-        minSdkVersion 23
+        minSdkVersion 21
         targetSdkVersion 30
         versionCode 1
         versionName "1.0"
@@ -25,10 +25,10 @@ android {
 dependencies {
     implementation fileTree(dir: "libs", include: ["*.jar"])
     implementation 'androidx.appcompat:appcompat:1.2.0'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
     implementation project(path: ':library')
     testImplementation 'junit:junit:4.13'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
 
 }

library/build.gradle

@@ -5,7 +5,7 @@ android {
     buildToolsVersion "30.0.2"
 
     defaultConfig {
-        minSdkVersion 23
+        minSdkVersion 21
         targetSdkVersion 30
         versionCode 1
         versionName "1.0"
@@ -26,8 +26,8 @@ dependencies {
     implementation fileTree(dir: "libs", include: ["*.jar"])
     implementation 'androidx.appcompat:appcompat:1.2.0'
     testImplementation 'junit:junit:4.13'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
 
 }

library/src/main/AndroidManifest.xml

@@ -1,5 +1,3 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.dhairytripathi.library">
-
-    /
 </manifest>

library/src/main/java/com/dhairytripathi/library/EditTextPin.java

@@ -8,6 +8,7 @@
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.GradientDrawable;
 import android.graphics.drawable.LayerDrawable;
+import android.os.Build;
 import android.text.Editable;
 import android.text.TextWatcher;
 import android.util.AttributeSet;
@@ -24,6 +25,8 @@ public class EditTextPin extends ConstraintLayout {
     private Context context;
     private int underlineColor = R.color.underlineColor;
     private int background = R.drawable.background;
+    private static final String TAG = "EditTextPin";
+
     public EditTextPin(Context context, AttributeSet attrs) {
         super(context, attrs);
         handleAttrs(attrs);
@@ -44,7 +47,9 @@ protected void onAttachedToWindow() {
         LayerDrawable shape = (LayerDrawable) ContextCompat.getDrawable(context,R.drawable.underline);
         GradientDrawable bgShape = (GradientDrawable) (shape.findDrawableByLayerId(R.id.underline));
         bgShape.setStroke(convertDpToPx(2), ContextCompat.getColor(context, underlineColor));
-        shape.setDrawable(0, bgShape);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            shape.setDrawable(0, bgShape);
+        }
         view.setBackground(shape);
         pin1 = findViewById(R.id.pin1);
         pin2 = findViewById(R.id.pin2);