Update README.md

AnthonyFermin · Jul 12, 2017 · 2e3fb59 · 2e3fb59
1 parent 3e4af12
commit 2e3fb59
Showing 1 changed file with 62 additions and 39 deletions.
diff --git a/library/README.md b/library/README.md
@@ -9,71 +9,94 @@
 ### Ensure your minSdkVersion is 19 or above:
 
 ```
-    android {
-        compileSdkVersion 25
-        defaultConfig {
-            applicationId "com.anthonyfdev.dropdownviewexample"
-            minSdkVersion 19
-            targetSdkVersion 25
-        }
+android {
+    compileSdkVersion 25
+    defaultConfig {
+	applicationId "com.anthonyfdev.dropdownviewexample"
+	minSdkVersion 19
+	targetSdkVersion 25
     }
+}
 ```
 
 #### Add jitpack repository to your root build.gradle:
 ```
-	allprojects {
-		repositories {
-			...
-			maven { url 'https://jitpack.io' }
-		}
-	}
+allprojects {
+	repositories {
+	...
+        maven { url 'https://jitpack.io' }
+    }
+}
 ```
 
 #### Add dependency to app level build.gradle:
 ```
-	dependencies {
-	        compile 'com.github.AnthonyFermin:DropDownView:1.0.0'
-	}
-
+dependencies {
+    compile 'com.github.AnthonyFermin:DropDownView:1.0.1'
+}
 ```
 
 ### Usage
 
 #### Add view to xml:
 ```
-        <com.anthonyfdev.dropdownview.DropDownView
-            android:id="@+id/drop_down_view"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            app:containerBackgroundColor="#b71c1c"
-            app:overlayColor="#64000000"/>
+<com.anthonyfdev.dropdownview.DropDownView
+    android:id="@+id/drop_down_view"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    app:containerBackgroundColor="#b71c1c"
+    app:overlayColor="#64000000"/>
 ```
 
 #### Bind views:
 ```
-        dropDownView = (DropDownView) findViewById(R.id.drop_down_view);
-        collapsedView = LayoutInflater.from(this).inflate(R.layout.view_my_drop_down_header, null, false);
-        expandedView = LayoutInflater.from(this).inflate(R.layout.view_my_drop_down_expanded, null, false);
+dropDownView = (DropDownView) findViewById(R.id.drop_down_view);
+collapsedView = LayoutInflater.from(this).inflate(R.layout.view_my_drop_down_header, null, false);
+expandedView = LayoutInflater.from(this).inflate(R.layout.view_my_drop_down_expanded, null, false);
 ```
 
 #### Set header and expanded views to DropDownView:
 ```
-        dropDownView.setHeaderView(collapsedView);
-        dropDownView.setExpandedView(expandedView);
+dropDownView.setHeaderView(collapsedView);
+dropDownView.setExpandedView(expandedView);
 ```
 
 #### Call expand or collapse:
 ```
-        collapsedView.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                if (dropDownView.isExpanded()) {
-                    dropDownView.collapseDropDown();
-                } else {
-                    dropDownView.expandDropDown();
-                }
-            }
-        });
+collapsedView.setOnClickListener(new View.OnClickListener() {
+    @Override
+    public void onClick(View v) {
+        if (dropDownView.isExpanded()) {
+            dropDownView.collapseDropDown();
+        } else {
+            dropDownView.expandDropDown();
+        }
+    }
+});
+```
+
+#### Optional DropDownListener:
+```
+/**
+* A listener that wraps functionality to be performed when the drop down is successfully expanded
+* or collapsed.
+*/
+private final DropDownView.DropDownListener dropDownListener = new DropDownView.DropDownListener() {
+	@Override
+	public void onExpandDropDown() {
+	    adapter.notifyDataSetChanged();
+	    ObjectAnimator.ofFloat(headerChevronIV, View.ROTATION.getName(), 180).start();
+	}
+  
+	@Override
+	public void onCollapseDropDown() {
+	    ObjectAnimator.ofFloat(headerChevronIV, View.ROTATION.getName(), -180, 0).start();
+	}
+    };
+     
+...
+ 
+dropDownView.setDropDownListener(dropDownListener);
 ```
 
 #### Done!
@@ -88,7 +111,7 @@ you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 
     http://www.apache.org/licenses/LICENSE-2.0
-
+    
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.