使用手势输入数字

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:text="绘制一个数字"
        android:textColor="@android:color/black"
        android:textSize="20dp" />

    <EditText
        android:id="@+id/editText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="number"
        android:textColor="@android:color/black"
        android:textSize="20dp" >

        <requestFocus />
    </EditText>

    <android.gesture.GestureOverlayView
        android:id="@+id/gestures"
        android:layout_width="fill_parent"
        android:layout_height="0dip"
        android:layout_weight="1.0" >
    </android.gesture.GestureOverlayView>

</LinearLayout>

public class MainActivity extends Activity implements OnGesturePerformedListener{

private GestureLibrary library;
private EditText et;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
library = GestureLibraries.fromRawResource(this, R.raw.gestures);//加载手势文件
et = (EditText)findViewById(R.id.editText);
if(!library.load()){//如果加载失败则退出
finish();
}
GestureOverlayView gesture = (GestureOverlayView)findViewById(R.id.gestures);
gesture.addOnGesturePerformedListener(this);
}

@Override
public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) {
ArrayList<Prediction> gestures = library.recognize(gesture);
int index = 0;
double score = 0.0;
for (int i = 0; i < gestures.size(); i++) {
Prediction result = gestures.get(i);
if(result.score>score){
index = i;
score = result.score;
}
}

<span style="white-space:pre">		</span>String text = et.getText().toString();//获得编辑框中已经包含的文本
<span style="white-space:pre">		</span>text += gestures.get(index).name;//获得最佳匹配
<span style="white-space:pre">		</span>et.setText(text);//更新编辑框
}

}