{"id":11633,"date":"2022-11-21T17:04:57","date_gmt":"2022-11-21T09:04:57","guid":{"rendered":"https:\/\/www.yimenapp.com\/kb-yimen\/?p=11633"},"modified":"2022-11-21T17:04:58","modified_gmt":"2022-11-21T09:04:58","slug":"vivo%e6%89%8b%e5%86%99%e7%ac%94sdk%e6%8e%a5%e5%85%a5%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/www.yimenapp.com\/kb-yimen\/11633\/","title":{"rendered":"VIVO\u624b\u5199\u7b14SDK\u63a5\u5165\u6307\u5357"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\"><strong>\u4e1a\u52a1\u4ecb\u7ecd<\/strong><\/h1>\n\n\n\n<p><span class=\"wpcom_tag_link\"><a href=\"https:\/\/www.yimenapp.com\/kb-yimen\/tag\/vivo%e6%89%8b%e5%86%99\/\" title=\"vivo\u624b\u5199\" target=\"_blank\">vivo\u624b\u5199<\/a><\/span>\u7b14SDK\u63d0\u4f9b\u4e86\u5728vivo Pad\u4e0a\u4f7f\u7528\u624b\u5199\u7b14\u8fdb\u884c\u7b14\u5f62\u9009\u62e9\u3001\u7b14\u5f62\u7ed8\u5236\u64e6\u9664\uff0c\u7b14\u8ff9\u9884\u6d4b\u7b49\u80fd\u529b\uff0c\u4e3b\u8981\u5305\u542b\u753b\u7b14\u5de5\u5177\u680f\u548c\u753b\u5e03\u4e24\u4e2a\u7ec4\u6210\u90e8\u5206\uff0c\u901a\u8fc7SDK\u7684\u7b80\u5355\u96c6\u6210\uff0c\u5373\u53ef\u4e3a\u5e94\u7528\u63d0\u4f9b\u591a\u79cd\u4e66\u5199\u7ed8\u5236\u80fd\u529b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a><a><\/a>\u529f\u80fd\u4ecb\u7ecd<\/h2>\n\n\n\n<p><strong>1.\u753b\u7b14\u5de5\u5177\u680f<\/strong><br>\u753b\u7b14\u5de5\u5177\u680f\u5305\u542b\u4ee5\u4e0b\u5185\u5bb9<br>\u753b\u7b14\u5de5\u5177\uff1a\u94c5\u7b14\uff0c\u94a2\u7b14\uff0c\u6c34\u5f69\u7b14\uff0c\u9a6c\u514b\u7b14\u56db\u79cd\u753b\u7b14\u5de5\u5177\uff0c5\u6863\u7c97\u7ec6\u8c03\u8282\uff0c\u540c\u65f6\u53ef\u901a\u8fc7\u8c03\u8272\u76d8\u8fdb\u884c\u989c\u8272\u4fee\u6539<br>\u6a61\u76ae\u5de5\u5177\uff1a\u5305\u542b\u50cf\u7d20\u6a61\u76ae\u64e6\u548c\u5bf9\u8c61\u6a61\u76ae\u64e6\u4e24\u79cd\u6a61\u76ae\u64e6\u7c7b\u578b<br>\u5957\u7d22\u5de5\u5177\uff1a\u5305\u542b\u6846\u9009\uff0c\u79fb\u52a8\uff0c\u590d\u5236\uff0c\u526a\u5207\uff0c\u7c98\u8d34\uff0c\u5220\u9664\u7684\u529f\u80fd<br>\u53e6\u5916\u8fd8\u63d0\u4f9b\u4e86\u64a4\u9500\u3001\u91cd\u505a\u53ca\u4ec5\u624b\u5199\u7b14\u6d82\u9e26\u5f00\u5173\u529f\u80fd<br><img decoding=\"async\" src=\"https:\/\/kb.cdn.yimenapp.com\/yimen\/2022\/11\/20221121170457466.png\" alt=\"image202234_161459.png\"><\/p>\n\n\n\n<p><strong>2.\u753b\u5e03<\/strong><br>\u753b\u5e03\u63d0\u4f9b\u4e86\u4e00\u5757\u533a\u57df\uff0c\u7528\u4e8e\u7b14\u8ff9\u7684\u7ed8\u5236\u548c\u64e6\u9664\uff0c\u540c\u65f6\u96c6\u6210\u4e86\u7b14\u8ff9\u9884\u6d4b\u529f\u80fd<\/p>\n\n\n\n<p><strong>3.\u7b14\u8ff9\u9884\u6d4b<\/strong><br>\u7b14\u8ff9\u9884\u6d4b\u529f\u80fd\u901a\u8fc7\u7b14\u8ff9\u7684\u62a5\u70b9\uff0c\u5bf9\u7b14\u8ff9\u7ed8\u5236\u7684\u4f4d\u7f6e\u8fdb\u884c\u9884\u6d4b\uff0c\u51cf\u5c11\u4e86\u7b14\u8ff9\u7ed8\u5236\u7684\u5ef6\u8fdf\uff0c\u4f18\u5316\u4e86\u4e66\u5199\u4f53\u9a8c<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><a><\/a><a><\/a><strong>\u63a5\u5165\u6307\u5357<\/strong><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a><a><\/a>\u4e00\u3001SDK\u63a5\u5165<\/h2>\n\n\n\n<p><strong>\u5f00\u53d1\u73af\u5883<\/strong><\/p>\n\n\n\n<p>Android Studio 3.4\u53ca\u4ee5\u4e0a\u7248\u672c<br>Gradle \u7248\u672c 3.4\u53ca\u4ee5\u4e0a<br>minSdkVersion 28<br>targetSdkVersion 30<br>compileSdkVersion 30<\/p>\n\n\n\n<p><strong>\u63a5\u5165\u6d41\u7a0b<\/strong><\/p>\n\n\n\n<p>vivo\u624b\u5199\u7b14SDK\u76ee\u524d\u4ec5\u652f\u6301\u5728vivo Pad\u4e0a\u4f7f\u7528\uff0c\u5f00\u53d1\u8005\u9700\u8981\u5728\u672c\u5730\u96c6\u6210aar\u4ee5\u53ca\u58f0\u660eSDK\u6240\u9700\u6743\u9650\uff0c\u5373\u53ef\u5f00\u59cb\u63a5\u5165SDK\u8fdb\u884c\u5e94\u7528\u5f00\u53d1\uff0c\u63a5\u5165\u6b65\u9aa4\u5982\u4e0b\uff1a<br>1.\u9996\u5148\u5728\u672c\u5730lib\u6dfb\u52a0penengine.aar\u6587\u4ef6\u3002<br><img decoding=\"async\" src=\"https:\/\/kb.cdn.yimenapp.com\/yimen\/2022\/11\/20221121170457468.png\" alt=\"image202234_161311.png\"><\/p>\n\n\n\n<p>2.\u5728build.gradle\u6587\u4ef6\u4e2d\u6dfb\u52a0\u5bf9\u5e94\u4f9d\u8d56<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>repositories { \n    flatDir { \n        dirs 'libs' \n    } \n} \n       \ndependencies { \n    implementation(name:'penengine', ext:'aar')\n}  \n<\/code><\/pre>\n\n\n\n<p>3.\u5728AndroidManifest.xml\u6587\u4ef6\u4e2d\u6dfb\u52a0SDK\u6240\u9700\u6743\u9650\uff0c\u6dfb\u52a0\u4e4b\u540e\u4fbf\u53ef\u5f00\u59cb\u4f7f\u7528SDK\u8fdb\u884c\u5f00\u53d1\u4e86<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;uses-permission android:name=\"android.permission.ACCESS_NETWORK_STATE\" \/&gt;  \n&lt;uses-permission android:name=\"android.permission.INTERNET\" \/&gt; \n&lt;uses-permission android:name=\"android.permission.WRITE_EXTERNAL_STORAGE\" \/&gt;\n&lt;uses-permission android:name=\"android.permission.READ_EXTERNAL_STORAGE\" \/&gt;\n<\/code><\/pre>\n\n\n\n<p>4.\u5728proguard-rules.pro\u6587\u4ef6\u4e2d\u914d\u7f6e\u6df7\u6dc6<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-keeppackagenames com.vivo.penengine.impl\n-keep class com.vivo.penengine.impl.**.*\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a><a><\/a>\u4e8c\u3001\u7b80\u5355\u5e94\u7528\u4ecb\u7ecd<\/h2>\n\n\n\n<p>\u4e0b\u9762\u4ecb\u7ecdsdk\u6700\u57fa\u7840\u7684\u4f7f\u7528\u65b9\u5f0f\uff0c\u5728\u5e94\u7528\u9875\u9762\u6dfb\u52a0\u753b\u5e03\u548c\u753b\u7b14\u5de5\u5177\u680f\uff0c\u6dfb\u52a0\u4e4b\u540e\u4fbf\u53ef\u4f7f\u7528\u753b\u7b14\u9009\u62e9\uff0c\u7b14\u8ff9\u7ed8\u5236\u548c\u64e6\u9664\u7b49\u529f\u80fd,\u6b65\u9aa4\u5982\u4e0b<\/p>\n\n\n\n<p>1.\u5728\u5e94\u7528\u9875\u9762\u5bf9\u5e94\u7684layout\u6587\u4ef6\u6dfb\u52a0VivoCanvasViewImpl<\/p>\n\n\n\n<p><strong>layout<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?xml version=\"1.0\" encoding=\"utf-8\"?&gt;\n&lt;FrameLayout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\n    xmlns:tools=\"http:\/\/schemas.android.com\/tools\"\n    android:layout_width=\"match_parent\"\n    android:layout_height=\"match_parent\"\n    android:orientation=\"vertical\"\n    tools:context=\".MainActivity\"&gt;\n \n    &lt;com.vivo.penengine.impl.VivoCanvasViewImpl\n        android:id=\"@+id\/canvasView\"\n        android:layout_width=\"match_parent\"\n        android:layout_height=\"match_parent\"\n        android:layout_marginTop=\"100dp\"\n        android:layout_marginBottom=\"100dp\"\n        \/&gt;\n \n&lt;\/FrameLayout&gt;\n<\/code><\/pre>\n\n\n\n<p>2.\u521d\u59cb\u5316VivoCanvasViewImpl\u548cVivoToolPickerImpl\uff0c\u5e76\u5c06\u4e24\u8005\u8fdb\u884c\u7ed1\u5b9a<\/p>\n\n\n\n<p><strong>MainActivity<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class MainActivity extends Activity {\n \n    private static final String TAG = \"MainActivity\";\n    private VivoCanvasViewImpl mCanvasView;\n    private VivoToolPickerImpl mToolPicker;\n    private boolean mIsEngineAvailable;\n \n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        mIsEngineAvailable = PenEngineManager.isEngineAvailable(this);\n        if (mIsEngineAvailable) {\n            return;\n        }\n        setContentView(R.layout.activity_main);\n        mCanvasView = findViewById(R.id.canvasView);\n        mToolPicker = new VivoToolPickerImpl(this);\n        mToolPicker.bindCanvasView(mCanvasView);\n        mToolPicker.show();\n    }\n \n    @Override\n    protected void onResume() {\n        super.onResume();\n        if (!mIsEngineAvailable) {\n            return;\n        }\n        if (mToolPicker != null){\n            mToolPicker.onResume();\n        }\n    }\n \n    @Override\n    protected void onDestroy() {\n        super.onDestroy();\n        if (!mIsEngineAvailable) {\n            return;\n        }\n        if (mToolPicker != null) {\n            mToolPicker.onDestroy();\n        }\n        if (mCanvasView != null) {\n            mCanvasView.release();\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\"><a><\/a><a><\/a><strong>\u529f\u80fd\u4ecb\u7ecd<\/strong><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a><a><\/a>\u4e00\u3001\u753b\u5e03\u56de\u8c03\u548c\u7b14\u5f62\u9009\u62e9<\/h2>\n\n\n\n<p>1.\u53ef\u901a\u8fc7\u6ce8\u518c\u56de\u8c03\u76d1\u542c\u63a5\u53e3\u6765\u83b7\u53d6\u753b\u5e03\u4e8b\u4ef6\uff0c\u5305\u62ec\u6d82\u9e26\u5185\u5bb9\u4fee\u6539\u548c\u7b14\u5f62\u5207\u6362\u3002<\/p>\n\n\n\n<p>\u56de\u8c03\u63a5\u53e3\u4e2d<\/p>\n\n\n\n<p>onStepChanged \u5728\u6bcf\u5b8c\u6210\u4e00\u7b14\u7ed8\u5236\u4e4b\u540e\u8fdb\u884c\u56de\u8c03\uff0c\u5176\u4e2dStepType\u8868\u793a\u8be5\u7b14\u7ed8\u5236\u7684\u7c7b\u578b\uff0c\u5206\u4e3a NEW\uff08\u65b0\u589e\u7b14\u8ff9\uff09 UNDO \uff08\u64a4\u9500\uff09\uff0cREDO\uff08\u91cd\u505a\uff09\uff0cCLEAR\uff08\u6e05\u7a7a\u64a4\u9500\u91cd\u505a\u6808\uff09<\/p>\n\n\n\n<p>onSetPen \u63a5\u53e3\u4f1a\u5728\u7b14\u5f62\u5207\u6362\u4e4b\u540e\u8fdb\u884c\u56de\u8c03\uff0c\u53ef\u7528\u8be5\u63a5\u53e3\u76d1\u542c\u7b14\u5f62\u7684\u53d8\u5316<\/p>\n\n\n\n<p>onPathLoaded \u63a5\u53e3\u5728\u753b\u5e03\u521d\u59cb\u5316\u7b14\u8ff9\u52a0\u8f7d\u5b8c\u6210\u540e\u8fdb\u884c\u56de\u8c03<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mCanvasView.registerOnCanvasListener(new VivoCanvasViewImpl.OnCanvasListener() {\n            @Override\n            public void onStepChanged(StepType stepType) {\n            }\n \n            @Override\n            public void onSetPen(Pen pen) {\n            }\n \n            @Override\n            public void onPathLoaded() {\n            }\n        });\n<\/code><\/pre>\n\n\n\n<p>2.\u9ed8\u8ba4\u5de5\u5177\u680f\u63d0\u4f9b\u7684\u7b14\u5f62\u7c7b\u578b\u5305\u62ec \u94a2\u7b14\u3001\u94c5\u7b14\u3001\u6c34\u5f69\u7b14\u3001\u9a6c\u514b\u7b14\u3001\u6a61\u76ae\u3001\u5957\u7d22\uff0c\u53ef\u5728\u521d\u59cb\u5316toolPicker\u540e\u901a\u8fc7\u7981\u7528\u6765\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684\u7b14\u5f62\u7ec4\u5408<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Set&lt;PenType&gt; penTypes = new HashSet&lt;&gt;();\npenTypes.add(PenType.PENCIL);\nmToolPicker.disablePens(penTypes);\n<\/code><\/pre>\n\n\n\n<p>3.\u53ef\u5728\u521d\u59cb\u5316\u65f6\u901a\u8fc7setPen\u63a5\u53e3\u8bbe\u7f6e\u9ed8\u8ba4\u7b14\u5f62\uff0c\u4f9d\u6b21\u8bbe\u7f6e\u7b14\u5f62\u7c7b\u578b\uff0c\u900f\u660e\u5ea6\uff080 ~ 100\uff09\uff0c\u989c\u8272\uff0c\u7c97\u7ec6\u7b49\u7ea7\uff080 ~ 4\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mToolPicker.setPen(Pen.WATERCOLOR_PEN, 60, Color.BLACK, SizeLevel.LEVEL_0);\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a><a><\/a>\u4e8c\u3001\u7b14\u8ff9\u9884\u6d4b<\/h2>\n\n\n\n<p>\u7b14\u8ff9\u9884\u6d4b\u529f\u80fd\uff0c\u5373\u901a\u8fc7\u5f53\u524d\u7684\u8f68\u8ff9\uff0c\u9884\u6d4b\u51fa\u4e0b\u4e00\u4e2a\u53ef\u80fd\u7684\u89e6\u6478\u70b9\uff0c\u7528\u4e8e\u51cf\u5c11\u753b\u7b14\u8f68\u8ff9\u7ed8\u5236\u7684\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<p>\u903b\u8f91\u5982\u4e0b\uff1a<br>1.\u901a\u8fc7\u83b7\u53d6\u8f68\u8ff9\u7684\u70b9\u96c6<br>2.\u5c06\u70b9\u96c6\u4f20\u5165\u7b97\u6cd5\u4e2d\uff0c\u901a\u8fc7\u7b97\u6cd5\u8ba1\u7b97\u5f97\u5230\u9884\u6d4b\u70b9\u7684\u6570\u636e<br>3.\u7b97\u6cd5\u8fd4\u56de\u7ed3\u679c\u5373\u4e3a\u6839\u636e\u8f68\u8ff9\u70b9\u96c6\u6240\u5f97\u7684\u9884\u6d4b\u70b9<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u4f7f\u7528\u7b80\u5355demo\u8fdb\u884c\u5c55\u793a\uff0c\u4f7f\u7528\u4e00\u7b14\u5b8c\u6574\u7684\u7ed8\u5236\u8f68\u8ff9\u7ecf\u8fc7\u7684\u70b9\u4f5c\u4e3a\u70b9\u96c6\uff0c\u8ba1\u7b97\u51fa\u9884\u6d4b\u70b9<\/p>\n\n\n\n<p>1.\u5728onTouchEvent\u4e2d\uff0c\u4f7f\u7528requestUnbufferedDispatch() \u65b9\u6cd5\u83b7\u53d6\u65e0\u7f13\u51b2\u7684MotionEventsl\u6d41<br>2.\u5bf9\u6bcf\u4e2aACTION_MOVE\u548cACTION_UP\u7684\u62a5\u70b9\uff0c\u83b7\u53d6\u5bf9\u5e94\u7684\u5386\u53f2\u70b9\uff0c\u5f97\u5230\u5b8c\u6574\u7684\u8f68\u8ff9\u70b9\u96c6<br>3.\u5c06\u70b9\u96c6\u9001\u5165\u7b97\u6cd5\u5f15\u64ce\u4e2d\uff0c\u83b7\u53d6\u5bf9\u5e94\u7684\u9884\u6d4b\u70b9\uff0c\u6b64\u540e\u53ef\u5bf9\u6b64\u9884\u6d4b\u70b9\u8fdb\u884c\u6e32\u67d3<br>4.view\u9500\u6bc1\u65f6\uff0c\u9700\u8981\u91ca\u653e\u7b97\u6cd5\u5f15\u64ce<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public boolean onTouchEvent(MotionEvent event) {\n    \/\/ step 1: Request unbuffered dispatch of the given stream of MotionEvents to this View.\n    requestUnbufferedDispatch(event);\n \n    if (event.getAction() == MotionEvent.ACTION_DOWN) {\n        mTouchPointDataList.add(ConvertUtil.convertMotionEventToTouchPoint(event));\n        ......\n    } else if (event.getAction() == MotionEvent.ACTION_MOVE) {\n        handleActionMove(event);\n    } else if (event.getAction() == MotionEvent.ACTION_UP) {\n        handleActionMove(event);\n        ......\n    }\n    invalidate();\n    return true;\n}\n \nprivate void handleActionMove(MotionEvent event) {\n    \/\/ step 2: Get the history point set of the current motion event.\n    for (int i = 0; i &lt; event.getHistorySize() - 1; i++) {\n        MotionEvent historyEvent = MotionEvent.obtain(event.getDownTime(),\n                event.getHistoricalEventTime(i), event.getAction(),\n                event.getHistoricalX(i), event.getHistoricalY(i), 0);\n        mTouchPointDataList.add(ConvertUtil.convertMotionEventToTouchPoint(historyEvent));\n    }\n    mTouchPointDataList.add(ConvertUtil.convertMotionEventToTouchPoint(event));\n \n    \/\/ step 3: Use algorithm to calculate prediction point.\n    if (mVivoAlgorithmManager == null) {\n        mVivoAlgorithmManager = new VivoAlgorithmManagerImpl(getContext());\n    }\n    if (mVivoAlgorithmManager.isFeatureEnable()) {\n        mEstimatePoint = mVivoAlgorithmManager.computeEstimatePoint(mTouchPointDataList);\n    }\n    ......\n}\n \npublic void release() {\n    \/\/ step 4: Release algorithm engine.\n    if (mVivoAlgorithmManager != null) {\n        mVivoAlgorithmManager.release();\n    }\n    ......\n}\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>public static TouchPointData convertMotionEventToTouchPoint(MotionEvent event) {\n    if (event == null) {\n        return null;\n    }\n    TouchPointData touchPoint = new TouchPointData(event.getX(), event.getY());\n    touchPoint.setOrientation(event.getOrientation());\n    touchPoint.setPressure(event.getPressure());\n    touchPoint.setTime(event.getEventTime());\n    return touchPoint;\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a><a><\/a>\u4e09\u3001\u624b\u5199\u7b14\u6309\u952e\u5207\u6362<\/h2>\n\n\n\n<p>\u624b\u5199\u7b14\u6309\u952e\u5207\u6362\u529f\u80fd\uff0c\u9700\u8981\u5728\u6309\u4f4f\u6309\u952e\u843d\u7b14\u65f6\u5207\u6362\u7b14\u5f62\u4e3a\u6a61\u76ae\u64e6\uff0c\u62ac\u7b14\u540e\u5207\u6362\u7b14\u5f62\u4e3a\u539f\u6765\u7684\u7b14\u5f62<\/p>\n\n\n\n<p>\u5904\u7406\u903b\u8f91\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>\u6536\u5230ACTION_DOWN\u4e8b\u4ef6\u540e\u8fdb\u884c\u5224\u65ad\uff0c\u4e8b\u4ef6\u7684buttonState\u662f\u5426\u4e3aBUTTON_STYLUS_PRIMARY\uff0c\u82e5\u662f\u5219\u4ee3\u8868\u6309\u952e\u4e8b\u4ef6\u89e6\u53d1\uff0c\u6b64\u65f6\u5224\u65ad\u5f53\u524d\u662f\u5426\u4e3a\u6a61\u76ae\u64e6\uff0c\u5982\u679c\u4e0d\u662f\u5219\u5207\u6362\u4e3a\u6a61\u76ae\u64e6\uff0c\u540c\u65f6\u8bb0\u5f55\u72b6\u6001\uff1b<\/p>\n\n\n\n<p>\u62ac\u7b14\u540e\u5bf9\u72b6\u6001\u8fdb\u884c\u5224\u65ad\uff0c\u5982\u679c\u7b14\u5f62\u88ab\u5207\u6362\u4e3a\u6a61\u76ae\u64e6\uff0c\u5219\u5207\u6362\u4e3a\u539f\u6765\u7b14\u5f62\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Override\n@Override\npublic boolean onTouchEvent(MotionEvent event) {\n    if (event.getPointerId(event.getActionIndex()) == 0) {\n        if (event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_POINTER_DOWN) {\n            if (event.getButtonState() == MotionEvent.BUTTON_STYLUS_PRIMARY) {\n                if (mErasePen != null &amp;&amp; mCurrentPen.getType() != Pen.PenType.POINT_ERASE &amp;&amp; mCurrentPen.getType() != Pen.PenType.STROKE_ERASE) {\n                    \/\/TODO switch to eraser\n                    mIsDownChange = true;\n                }\n            } else {\n                mIsDownChange = false;\n            }\n        } else if (event.getAction() == MotionEvent.ACTION_UP || event.getAction() == MotionEvent.ACTION_POINTER_UP) {\n            if (mIsDownChange) {\n                \/\/TODO switch to last pen\n            }\n        }\n    }\n    return super.onTouchEvent(event);\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>vivo\u624b\u5199\u7b14SDK\u63d0\u4f9b\u4e86\u5728vivo 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