一丶首先创建一个手势库
二丶手势实例
- 布局文件：
在布局文件中有：
<android.gesture.GestureOverlayView
android:id="@+id/gv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000000"
android:gestureStrokeWidth="10"
android:gestureColor="#ff0000"
/> - MainActivity中
public class MainActivity extends Activity {
private GestureOverlayView gv;//手势控件
private GestureLibrary gestureLibrary;//加载手势库
private boolean loadStatus;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//拿到控件
gv = (GestureOverlayView) findViewById(R.id.gv);
//创建加载手势库的工具
gestureLibrary = GestureLibraries.fromRawResource(this, R.raw.gestures);
//加载手势库
loadStatus = gestureLibrary.load();
//给gv加一个监听器
//监听一种手势
gv.addOnGesturePerformedListener(new OnGesturePerformedListener() {
@Override
public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) {
//手势加载成功
if(loadStatus){
//识别手势 Prediction(手势相似度）
ArrayList<Prediction> pres = gestureLibrary.recognize(gesture);
if(!pres.isEmpty()){
Prediction pre = pres.get(0);
if(pre.score > 6){
if("close".equals(pre.name)){
finish();
}else if("tel".equals(pre.name)){
//打电话
Intent intent = new Intent();
intent.setAction(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel://110"));
startActivity(intent);
}else if("right".equals(pre.name)){
Toast.makeText(getApplicationContext(), "正确", 0).show();
}
}else{
Toast.makeText(getApplicationContext(), "手势不匹配", 0).show();
}
}else{
Toast.makeText(MainActivity.this, "手势库加载失败", 0).show() ;
}
}
}
});
}
}