android 手势应用之我的第一个Demo APP
2015-12-16 09:49
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最近项目进度不是很紧,有时间来研究下android的手势识别方面的知识,其实这个东西目前在android很多应用中都可以看到了,用到的最多的就是APP,在登录的时候,我这个demo 其实 比较简单,主要是学习下怎么用的,具体的使用场景要看具体的项目了
这个demo的重点是在手势的识别上,因此在手势的新增和修改我都用的aosp的手势识别APP,如果想看怎么操作的可以去看源码(development/apps/GestureBuilder).可以到我的网盘下载 http://pan.baidu.com/disk/home#path=%252FGestureBuilder .
AndroidManifest.xml
getCustomeGesture.java
get_custome_gesture.xml
res/values/dimens.xml
strings.xml
res/raw/gesture
在这里下载 http://pan.baidu.com/disk/home#list/path=%2Fgesture
我预制
这个demo的重点是在手势的识别上,因此在手势的新增和修改我都用的aosp的手势识别APP,如果想看怎么操作的可以去看源码(development/apps/GestureBuilder).可以到我的网盘下载 http://pan.baidu.com/disk/home#path=%252FGestureBuilder .
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <!--suppress ALL --> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.baopingx.myapplication"> <uses-sdk android:minSdkVersion="17" android:maxSdkVersion="23" android:targetSdkVersion="23"/> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <!-- 往SDCard写入数据权限 --> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <!-- SDCard读取数据权限 --> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme"> <activity android:name=".getCustomeGesture" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
getCustomeGesture.java
package com.example.baopingx.myapplication; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.Set; import android.Manifest; import android.annotation.TargetApi; import android.app.Activity; import android.content.Intent; import android.content.pm.PackageManager; import android.gesture.Gesture; import android.gesture.GestureLibraries; import android.gesture.GestureLibrary; import android.gesture.GestureOverlayView; import android.gesture.GestureOverlayView.OnGestureListener; import android.gesture.GestureOverlayView.OnGesturePerformedListener; import android.gesture.Prediction; import android.hardware.Camera; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.support.v4.app.ActivityCompat; import android.support.v7.app.AppCompatActivity; import android.telephony.TelephonyManager; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class getCustomeGesture extends AppCompatActivity { private static final String TAG = "wilson_gesture"; private GestureLibrary library; private Gesture mgesture; private GestureOverlayView overlayView; private TelephonyManager tm = null; private String gesPath = "" ; private Button mbutton = null; private short REQUEST_WRITE_EXTERNAL_STORAGE = 0; private static List<String> permissions = new ArrayList<String>(); /* * 程序预制了几个手势 * 1 当画C字母的时候 会进行打电话处理 * 2 当画叉的时候 程序会退出 * 3 当画V的时候,会打开摄像头 * */ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.get_custome_gesture); if (!Environment.MEDIA_MOUNTED.equals(Environment .getExternalStorageState())) { Toast.makeText(this, "SDcard not exits!", Toast.LENGTH_SHORT).show(); this.finish(); } init(); gesPath= new File(Environment.getExternalStorageDirectory(), "gestures").getAbsolutePath(); File f = new File(gesPath); if (!f.exists()) { Log.d(TAG, "use prepare GestureLibraries" ); library = GestureLibraries.fromRawResource(this, R.raw.gestures);//用预制的代替 } library = GestureLibraries.fromFile(f); if(!library.load()){ Toast.makeText(getApplicationContext(), "gesture file load failed", 1).show(); this.finish(); } final Set<String> entries = library.getGestureEntries(); Log.i(TAG, "current GestureLibraries record = " + entries.size()); } public void init() { mbutton = (Button) this.findViewById(R.id.reconize); overlayView = (GestureOverlayView) this.findViewById(R.id.gestures); overlayView.addOnGestureListener(new GestureListener());//为view添加手势监听事件 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { if (!hasPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)&&!hasPermission(Manifest.permission.READ_EXTERNAL_STORAGE)) { permissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE); permissions.add(Manifest.permission.READ_EXTERNAL_STORAGE); if (!permissions.isEmpty()) { requestPermissions(permissions.toArray(new String[permissions.size()]), REQUEST_WRITE_EXTERNAL_STORAGE); } } } } @TargetApi(Build.VERSION_CODES.M) public boolean hasPermission(String permission) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { return checkSelfPermission(permission) == PackageManager.PERMISSION_GRANTED; } else { Log.d(TAG, "not M build.do nothing"); return true; } } public void find(View v) { recognize(mgesture); overlayView.clear(true);//clear before gesture } private final class GestureListener implements GestureOverlayView.OnGestureListener { public void onGestureStarted(GestureOverlayView overlay, MotionEvent event) { Log.i(TAG, "onGestureStarted()"); mbutton.setEnabled(true); } public void onGesture(GestureOverlayView overlay, MotionEvent event) { Log.i(TAG, "onGesture()"); } public void onGestureEnded(GestureOverlayView overlay, MotionEvent event) { Log.i(TAG, "onGestureEnded()"); mgesture = overlay.getGesture(); } public void onGestureCancelled(GestureOverlayView overlay, MotionEvent event) { Log.i(TAG, "onGestureCancelled()"); } } private final class GesturePerformedListener implements GestureOverlayView.OnGesturePerformedListener { public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) { recognize(gesture); } } private void recognize(Gesture gesture) { //从手势库中查询匹配的内容,匹配的结果可能包括多个相似的内容,匹配度高的结果放在最前面。 ArrayList<Prediction> predictions = library.recognize(gesture); if (!predictions.isEmpty()) { Prediction prediction = predictions.get(0); if (prediction.score >= 5) {//匹配率 if ("call".equals(prediction.name)) { Log.i(TAG, "prediction.name = "+prediction.name); Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:13866668888")); if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) { // TODO: Consider calling //check whether call service can use now tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE); switch (tm.getSimState()) { case TelephonyManager.SIM_STATE_ABSENT: Log.e(TAG, "no sim card"); break; case TelephonyManager.SIM_STATE_UNKNOWN: Log.e(TAG, "unkonw status"); break; case TelephonyManager.SIM_STATE_READY: Log.i(TAG, "sim card ready"); Log.i(TAG, "now begin to start activity call"); startActivity(intent); } return; } }else if("exit".equals(prediction.name)){ Log.i(TAG, "prediction.name = "+prediction.name); finish();//关闭Activity } else { if ("video".equals(prediction.name)) { Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE); startActivity(intent); } } }else{ Toast.makeText(getApplicationContext(), R.string.low, 1).show(); } }else{ Log.i(TAG, "predictions.isEmpty"); Toast.makeText(getApplicationContext(), R.string.notfind, 1).show(); } } @Override protected void onDestroy() { super.onDestroy(); android.os.Process.killProcess(android.os.Process.myPid());//关闭应用 } }
get_custome_gesture.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.example.baopingx.myapplication.getCustomeGesture"> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <android.gesture.GestureOverlayView android:id="@+id/gestures" android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="1" android:gestureStrokeType="multiple" /> <Button android:id="@+id/reconize" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="0" android:onClick="find" android:text="@string/recognize" android:enabled="false" /> </LinearLayout> </RelativeLayout>
res/values/dimens.xml
<resources> <!-- Default screen margins, per the Android Design guidelines. --> <dimen name="activity_horizontal_margin">16dp</dimen> <dimen name="activity_vertical_margin">16dp</dimen> <dimen name="fab_margin">16dp</dimen> <dimen name="gesture_thumbnail_inset">8dip</dimen> <dimen name="gesture_thumbnail_size">64dip</dimen> </resources>
strings.xml
<resources> <string name="app_name">wilsonStudio</string> <string name="recognize">recognize</string> <string name="low">low</string> <string name="notfind">notfind</string> </resources>
res/raw/gesture
在这里下载 http://pan.baidu.com/disk/home#list/path=%2Fgesture
我预制
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