PianoView 能提供一个有趣的类似钢琴键盘的 ViewPager Indicator，即目前最美应用使用的控件。
效果图：
#Usage
##Dependency
###Min SDK：2.3.3
###Add Dependency
在项目的 build.gradle 里添加：
dependencies {
...
compile 'com.github.chaossss:PianoView:1.0.1'
}
##Customize PianoView
目前还没有提供自定义的特性
##Activity
public class MainActivity extends FragmentActivity implements PianoItemListener {
private PianoView pianoView;
private List<String> iconUrlList;
private PianoAdapter pianoAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
iconUrlList = new ArrayList<>();
pianoView = (PianoView) findViewById(R.id.piano_view);
pianoView.setScrollPianoStartDelayTime(400);
pianoView.setPianoItemListenerListener(this);
fetchData();
pianoView.showPianoAtPosition(0);
}
private void fetchData() {
for (int i = 0; i < 10; i++) {
iconUrlList.add("http://img5.duitang.com/uploads/item/201409/07/20140907080946_d4QiL.jpeg");
}
pianoAdapter = new PianoAdapter(this, pianoView);
pianoView.setAdapter(pianoAdapter);
pianoAdapter.addIconUrlList(iconUrlList);
}
@Override
public void onPianoItemSelected(int itemIndex) {
Toast.makeText(this, "item " + itemIndex + " selected", Toast.LENGTH_SHORT).show();
pianoView.showPianoAtPosition(itemIndex);
}
@Override
public void onStartSwipe() {
}
}##XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#000000">
<com.github.chaossss.pianoview.PianoView
android:id="@+id/piano_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"/>
</RelativeLayout>##License Copyright (C) 2016 Cheelok
Licensed under the Apache License, Version 2.0 (the "License"); 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. See the License for the specific language governing permissions and limitations under the License.