Android下实现手机验证码
16lz
2021-01-23
Android实现验证码
效果图
Github地址
地址：https://github.com/kongqw/Android-CheckView
使用
<kong.qingwei.demo.kqwcheckviewdemo.CheckView android:id="@+id/checkView" android:layout_width="200dp" android:layout_height="50dp" kongqw:bg_color="#FFFFFF00" kongqw:line_num="10" kongqw:point_num="100" kongqw:text_length="6" kongqw:text_size="30dp" />设置验证码宽度
android:layout_width="200dp"设置验证码高度
android:layout_height="50dp"设置验证码背景颜色
kongqw:bg_color="#FFFFFF00"设置验证码线的条数
kongqw:line_num="10"设置验证码点的个数
kongqw:point_num="100"设置验证码长度
kongqw:text_length="6"设置验证码字符大小
kongqw:text_size="30dp"验证码的类
package kong.qingwei.demo.kqwcheckviewdemo;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Paint;import android.util.AttributeSet;import android.util.Log;import android.view.View;import android.widget.Toast;/** * Created by kongqw on 2015/10/23. */public class CheckView extends View { Context mContext; String mCheckCode = null; Paint mTempPaint = new Paint(); private final int mPointNum; private final int mLineNum; private final int mTextLength; private final float mTextSize;// private final int mTextColor; private final int mBgColor; // 验证码 public CheckView(Context context, AttributeSet attrs) { super(context, attrs); mContext = context; TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CheckView); // 获取随机点的个数 mPointNum = a.getInteger(R.styleable.CheckView_point_num, 0); // 获取随机线的条数 mLineNum = a.getInteger(R.styleable.CheckView_line_num, 0); // 获取验证码长度 mTextLength = a.getInteger(R.styleable.CheckView_text_length, 4); // 获取验证码字体大小 mTextSize = a.getDimension(R.styleable.CheckView_text_size, 30); // 获取验证码字体颜色// mTextColor = a.getColor(R.styleable.CheckView_text_color, 0XFFFFFFFF); // 获取背景颜色 mBgColor = a.getColor(R.styleable.CheckView_bg_color, 0XFFFFFFFF); a.recycle(); mTempPaint.setAntiAlias(true); mTempPaint.setTextSize(mTextSize); mTempPaint.setStrokeWidth(3);// Log.d("CheckView", "point_num = " + mPointNum);// Log.d("CheckView", "line_num = " + mLineNum);// Log.d("CheckView", "text_length = " + mTextLength);// Log.d("CheckView", "text_color = " + mTextColor);// Log.d("CheckView", "text_size = " + mTextSize);// Log.d("CheckView", "bg_color = " + mBgColor); } public void onDraw(Canvas canvas) { // 生成验证码 mCheckCode = makeCheckCode(); // 设置二维码背景色 canvas.drawColor(mBgColor); final int height = getHeight(); // 获得CheckView控件的高度 final int width = getWidth(); // 获得CheckView控件的宽度 int dx = width / mTextLength / 2; char[] checkNum = mCheckCode.toCharArray(); for (int i = 0; i < mTextLength; i++) { // 绘制验证控件上的文本 canvas.drawText("" + checkNum[i], dx, getPositon(height), mTempPaint); dx += width / (mTextLength + 1); } int[] line; for (int i = 0; i < mLineNum; i++) { // 划线 line = getLine(height, width); canvas.drawLine(line[0], line[1], line[2], line[3], mTempPaint); } // 绘制小圆点 int[] point; for (int i = 0; i < mPointNum; i++) { // 画点 point = getPoint(height, width); canvas.drawCircle(point[0], point[1], 1, mTempPaint); } } /** * 生成新的验证码 */ public void invaliChenkCode() { invalidate(); } public String getCheckCode() { return mCheckCode; } /** * 产生随机验证码 * * @return */ public String makeCheckCode() { StringBuffer sb = new StringBuffer(); for (int i = 0; i < mTextLength; i++) { int temp = (int) (Math.random() * 10); sb.append(temp); } return sb.toString(); } /** * 计算验证码的绘制y点位置 * * @param height 传入CheckView的高度值 * @return */ public int getPositon(int height) { int tempPositoin = (int) (Math.random() * height); if (tempPositoin < 50) { tempPositoin += 50; } return tempPositoin; } /** * 随机产生划线的起始点坐标和结束点坐标 * * @param height 传入CheckView的高度值 * @param width 传入CheckView的宽度值 * @return 起始点坐标和结束点坐标 */ public static int[] getLine(int height, int width) { int[] tempCheckNum = {0, 0, 0, 0}; for (int i = 0; i < 4; i += 2) { tempCheckNum[i] = (int) (Math.random() * width); tempCheckNum[i + 1] = (int) (Math.random() * height); } return tempCheckNum; } /** * 随机产生点的圆心点坐标 * * @param height 传入CheckView的高度值 * @param width 传入CheckView的宽度值 * @return */ public static int[] getPoint(int height, int width) { int[] tempCheckNum = {0, 0, 0, 0}; tempCheckNum[0] = (int) (Math.random() * width); tempCheckNum[1] = (int) (Math.random() * height); return tempCheckNum; }}测试类
package kong.qingwei.demo.kqwcheckviewdemo;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity implements View.OnClickListener { private CheckView mCheckView; private EditText mEditPass; private Button mSubmit; private Button mRef; // 验证码： private String mCheckCode = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // 初始化控件 mCheckView = (CheckView) findViewById(R.id.checkView); mEditPass = (EditText) findViewById(R.id.checkTest); mSubmit = (Button) findViewById(R.id.submit); mRef = (Button) findViewById(R.id.ref); mSubmit.setOnClickListener(this); mRef.setOnClickListener(this); // 生成验证码 mCheckView.invaliChenkCode(); } public void onClick(View v) { switch (v.getId()) { case R.id.submit: if (mEditPass.getText().toString().equals(mCheckView.getCheckCode())) { Toast.makeText(this, "通过", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(this, "未通过", Toast.LENGTH_SHORT).show(); } break; case R.id.ref: // 生成新的验证码 mCheckView.invaliChenkCode(); break; default: break; } }}XML布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:kongqw="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <kong.qingwei.demo.kqwcheckviewdemo.CheckView android:id="@+id/checkView" android:layout_width="200dp" android:layout_height="50dp" kongqw:bg_color="#FFFFFF00" kongqw:line_num="10" kongqw:point_num="100" kongqw:text_length="6" kongqw:text_size="30dp" /> <EditText android:id="@+id/checkTest" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="请出入验证码" /> <Button android:id="@+id/submit" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="验证" /> <Button android:id="@+id/ref" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="换一张" /></LinearLayout>更多相关文章
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