参考: http://blog.csdn.net/lee576/article/details/7860935
新建一个view 文件 , DiyView.java
package com.test1; import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Path; import android.graphics.RectF; import android.util.AttributeSet; import android.view.View; /** * 九宫格解锁控件 * Created by Jerry on 2015/9/21. */ public class DiyView extends View { public DiyView(Context context) { this(context, null); } public DiyView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public DiyView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); canvas.drawColor(Color.RED); //新建画笔 Paint paint = new Paint(); //给画笔设置属性 paint.setAntiAlias(true);//消除据此 paint.setColor(Color.BLUE); paint.setStyle(Paint.Style.STROKE); paint.setStrokeWidth(3); //画直线 //drawLine(float startX, float startY, float stopX, float stopY,Paint) canvas.drawLine(10,10,100,10,paint); //通过画笔绘制圆形 //画圆 canvas.drawCircle(40, 40, 30, paint); //绘制正方形 canvas.drawRect(10, 80, 70, 140, paint); //绘制矩形 canvas.drawRect(10, 150, 70, 190, paint); //绘制圆角矩形 RectF re1 = new RectF(10,200, 70, 230); canvas.drawRoundRect(re1, 15, 15, paint); RectF rel1 = new RectF(10,240,70,270); //绘制椭圆 canvas.drawOval(rel1, paint); //定义一个Path对象,封闭成一个三角形 Path path1 = new Path(); path1.moveTo(10, 340); path1.lineTo(70, 340); path1.lineTo(40, 290); path1.close(); //根据path进行绘制,绘制三角形 canvas.drawPath(path1,paint); //根据path进行绘制,封闭成一个五角形 Path path2 = new Path(); path2.moveTo(26, 360); path2.lineTo(54, 360); path2.lineTo(70, 392); path2.lineTo(40, 420); path2.lineTo(10, 392); path2.close(); //根据path进行绘制,绘制五角形 canvas.drawPath(path2,paint); //-----------------设置填充风格后绘制------------------ paint.setStyle(Paint.Style.FILL); paint.setColor(Color.RED); canvas.drawCircle(120, 40, 30, paint); //绘制正方形 canvas.drawRect(90, 80, 150, 140, paint); //绘制矩形 canvas.drawRect(90, 150, 150, 190, paint); RectF re2 = new RectF(90,200,150,230); //绘制圆角矩形 canvas.drawRoundRect(re2, 15, 15, paint); RectF re21 = new RectF(90,240,150,270); //绘制椭圆 canvas.drawOval(re21, paint); Path path3 = new Path(); path3.moveTo(90, 340); path3.lineTo(150, 340); path3.lineTo(120, 290); path3.close(); //绘制三角形 canvas.drawPath(path3, paint); Path path4 = new Path(); path4.moveTo(106, 360); path4.lineTo(134, 360); path4.lineTo(150, 392); path4.lineTo(120, 420); path4.lineTo(90, 392); path4.close(); //绘制五角形 canvas.drawPath(path4, paint); } }
activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView android:id="@+id/text1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="物竞天择 适者生存" /> <com.test1.DiyView android:id="@+id/lockView" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#2B2B2B" /> </RelativeLayout>
MainActivity.java
package com.test1; import android.app.Activity; import android.os.Bundle; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // } }