Gesture获取屏幕手写事件并显示相应信息
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private GestureLibrary gesLib;private GestureOverlayView gesOverlay;private String gesPath;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.get_gesture);/* 查看SDCard是否存在 */if (!Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {/* SD卡不存在，显示Toast信息 */Toast.makeText(GetGesture.this, "SD卡不存在!程序无法运行", Toast.LENGTH_LONG).show();finish();}else {/* 取得GestureLibrary的文件路径 */gesPath = new File(Environment.getExternalStorageDirectory(),"gestures").getAbsolutePath();File file = new File(gesPath);if (!file.exists()) {/* gestures文件不存在，显示Toast信息 */Toast.makeText(GetGesture.this, "gestures文件不存在!程序无法运行",Toast.LENGTH_LONG).show();finish();}else {/* 初始化GestureLibrary */gesLib = GestureLibraries.fromFile(gesPath);if (!gesLib.load()) {/* 读取失败，显示Toast信息 */Toast.makeText(GetGesture.this, "gestures文件读取失败!程序无法运行",Toast.LENGTH_LONG).show();finish();} else {/* GestureOverlayView初始化 */gesOverlay = (GestureOverlayView) findViewById(R.id.myGestures1);gesOverlay.addOnGesturePerformedListener(new MyListener(this));}}}}/* 告定义OnGesturePerformedListener */public class MyListener implements OnGesturePerformedListener {private Context context;public MyListener(Context context) {this.context = context;}public void onGesturePerformed(GestureOverlayView overlay,Gesture gesture) {/* 手势比对 */ArrayList<Prediction> predictions = gesLib.recognize(gesture);if (predictions.size() > 0) {/* 取最接近的手势 */Prediction prediction = predictions.get(0);/* 取得预测值吹少己于1.0 */if (prediction.score > 1.0) {/* prediction.name?为?串预测结果 */Toast.makeText(this.context, prediction.name,Toast.LENGTH_SHORT).show();} else {/* 比对不到，显示Toast */Toast.makeText(this.context, "找不到匹配的Gesture!",Toast.LENGTH_SHORT).show();}} else {/* 比对不到，显示Toast */Toast.makeText(this.context, "找不到匹配的Gesture!",Toast.LENGTH_SHORT).show();}}}?<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"><TextViewandroid:id="@+id/myTextView1"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="请在屏幕上画出Gesture"android:textSize="18sp" /><android.gesture.GestureOverlayViewandroid:id="@+id/myGestures1"android:layout_width="fill_parent"android:layout_height="0dip"android:layout_weight="1.0"android:gestureStrokeType="multiple" /></LinearLayout>?