{"id":8456,"date":"2023-11-10T17:25:12","date_gmt":"2023-11-10T09:25:12","guid":{"rendered":"https:\/\/www.yimenyun.cn\/emen\/?p=8456"},"modified":"2023-11-10T17:25:12","modified_gmt":"2023-11-10T09:25:12","slug":"%e6%89%8b%e6%9c%baapp%e5%bc%80%e5%8f%91-%e7%94%bb%e7%82%b9%e8%a6%81%e6%80%8e%e4%b9%88%e5%ae%9e%e7%8e%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yimenyun.cn\/emen\/8456\/","title":{"rendered":"\u624b\u673aapp\u5f00\u53d1 \u753b\u70b9\u8981\u600e\u4e48\u5b9e\u73b0\uff1f"},"content":{"rendered":"<p>\u753b\u70b9\u662f\u79fb\u52a8\u5e94\u7528\u5f00\u53d1\u4e2d\u5e38\u89c1\u7684\u529f\u80fd\u4e4b\u4e00\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u5b9e\u73b0\u624b\u5199\u7b7e\u540d\u3001\u6d82\u9e26\u3001\u6807\u8bb0\u7b49\u529f\u80fd\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5b9e\u73b0\u753b\u70b9\u529f\u80fd\u3002<\/p>\n<p>1. 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href=\"https:\/\/www.yimenapp.cn\/fengzhuang-725.html\">aspnet\u624b\u673a\u7aef\u5f00\u53d1\u6846\u67b6<\/a>Canvas\u7c7b\u662fAndroid\u4e2d\u7684\u4e00\u4e2a\u753b\u5e03\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7684\u7ed8\u56fe\u65b9\u6cd5\uff0c\u5305\u62ec\u753b\u70b9\u3001\u753b\u7ebf\u3001\u753b\u5706\u3001\u753b\u77e9\u5f62\u7b49\u3002\u901a\u8fc7\u8c03\u7528Canvas\u7684\u7ed8\u56fe\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u5c4f\u5e55\u4e0a\u7ed8\u5236\u5404\u79cd\u56fe\u5f62\u3002<\/p>\n<p>2. \u8be6\u7ec6\u4ecb\u7ecd<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u6765\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5728Android\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5b9e\u73b0\u753b\u70b9\u529f\u80fd\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5728\u5e03\u5c40\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4e00\u4e2aView\u7ec4\u4ef6\uff0c\u7528\u4e8e\u663e\u793a\u7ed8\u5236\u7684\u56fe\u5f62\u3002\u5728\u8fd9\u4e2aView\u7ec4\u4ef6\u7684onDraw\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u8c03\u7528Canvas\u7684\u7ed8\u56fe\u65b9\u6cd5\u6765\u7ed8\u5236\u56fe\u5f62\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u5728Activity\u4e2d\u5904\u7406\u89e6\u6478\u4e8b\u4ef6\u3002\u5f53\u7528\u6237\u89e6\u6478\u5c4f\u5e55\u65f6\uff0c\u6211\u4eec\u9700\u8981\u83b7\u53d6\u89e6\u6478\u70b9\u7684\u5750\u6807\uff0c\u5e76\u5c06\u8fd9\u4e9b\u5750\u6807\u4f20\u9012\u7ed9\u753b\u70b9\u51fd\u6570\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u753b\u70b9\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>public class MainActivity extends AppCompatActivity {<\/p>\n<p>    private Paint mPaint;<\/p>\n<p>    private Bitmap mBitmap;<\/p>\n<p>    private Canvas mCanvas;<\/p>\n<p>    private float mX, mY;<\/p>\n<p>    private static final float TOUCH_TOLERANCE = 4;<\/p>\n<p>    @Override<\/p>\n<p>    protected void onCreate(Bundle savedInstanceState) {<\/p>\n<p>        super.onCreate(savedInstanceState);<\/p>\n<p>        setContentView(R.layout.activity_main);<\/p>\n<p>        \/\/ \u521d\u59cb\u5316\u753b\u7b14<\/p>\n<p>        mPaint = new Paint();<\/p>\n<p>        mPaint.setAntiAlias(true);<\/p>\n<p>        mPaint.setDither(true);<\/p>\n<p>        mPaint.setColor(Color.BLACK);<\/p>\n<p>        mPaint.setStyle(Paint.Style.STROKE);<\/p>\n<p>        mPaint.setStrokeJoin(Paint.Join.ROUND);<\/p>\n<p>        mPaint.setStrokeCap(Paint.Cap.ROUND);<\/p>\n<p>        mPaint.setStrokeWidth(12);<\/p>\n<p>        \/\/ \u521d\u59cb\u5316\u753b\u5e03<\/p>\n<p>        mBitmap = Bitmap.createBitmap(480, 800, Bitmap.Config.ARGB_8888);<\/p>\n<p>        mCanvas = new Canvas(mBitmap);<\/p>\n<p>        mCanvas.drawColor(Color.WHITE);<\/p>\n<p>        \/\/ \u83b7\u53d6View\u7ec4\u4ef6\u5e76\u8bbe\u7f6e\u89e6\u6478\u4e8b\u4ef6\u76d1\u542c\u5668<\/p>\n<p>        View view = findViewById(R.id.view);<\/p>\n<p>        view.setOnTouchListener(new View.OnTouchListener() {<\/p>\n<p>            @Override<\/p>\n<p>            public boolean onTouch(View v, MotionEvent event) {<\/p>\n<p>                float x = event.getX();<\/p>\n<p>                float y = event.getY();<\/p>\n<p>                switch (event.getAction()) {<\/p>\n<p>                    case MotionEvent.ACTION_DOWN:<\/p>\n<p>                        touchDown(x, y);<\/p>\n<p>                        break;<\/p>\n<p>                    case MotionEvent.ACTION_MOVE:<\/p>\n<p>                        touchMove(x, y);<\/p>\n<p>                        break;<\/p>\n<p>                    case MotionEvent.ACTION_UP:<\/p>\n<p>                       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mCanvas.drawLine(mX, mY, x, y, mPaint);<\/p>\n<p>            mX = x;<\/p>\n<p>            mY = y;<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>    private void touchUp() {<\/p>\n<p>        \/\/ do nothing<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u521d\u59cb\u5316\u4e86\u753b\u7b14\u548c\u753b\u5e03\uff0c\u5e76\u5728\u753b\u5e03\u4e0a\u7ed8\u5236\u4e86\u4e00\u4e2a\u767d\u8272\u80cc\u666f\u3002\u63a5\u7740\uff0c\u6211\u4eec\u83b7\u53d6\u4e86View\u7ec4\u4ef6\u5e76\u8bbe\u7f6e\u4e86\u89e6\u6478\u4e8b\u4ef6\u76d1\u542c\u5668\u3002\u5728\u89e6\u6478\u4e8b<a href=\"https:\/\/www.yimenapp.cn\/fengzhuang-3154.html\">vue 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