Android 验证码:数字序列、计算结果

1.数字序列验证码

昨天写了个小Demo，实现了随机生成验证码，和锁定EditText两个小功能，先看一下效果图：

锁定EditText在我们不需要用户编辑EditText内容的时候可以用到，实现还是很简单的，一行代码：

etLock.setEnabled(false);

随机生成验证码，主要是用了Random函数，以及将View转为Bitmap的逻辑，也没有难点。

有疑问欢迎交流~

还是上传一下代码吧，是用Android Studio写的。链接：代码下载

2.计算验证码

类似于CSDN的计算验证码，在之前的随机数字验证码Demo上扩展的，明早贴程序。

效果图：

Main.java:

package com.zms.textlock;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Matrix;import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.ImageView;import android.widget.TextView;import java.util.Random;public class Main extends ActionBarActivity {    private Button btnLock;    private EditText etLock;    private String numStrTmp = "";    private String numStr = "";    private int[] numArray = new int[4];    private int[] colorArray = new int[6];    private TextView tvHideA;    private TextView tvHideB;    private TextView tvHideC;    private TextView tvHideD;    private TextView tvHideE;    private TextView tvHideF;    private TextView tvHideG;    private ImageView ivNumA;    private ImageView ivNumB;    private ImageView ivNumC;    private ImageView ivNumD;    private ImageView ivNumE;    private ImageView ivNumF;    private ImageView ivNumG;    private Button btnCheck;    private TextView tvCheck;    private EditText etCheck;    // 计算类型的验证码    private String[] strVerify = new String[3];    private int[] intVerify = new int[3];    private int intResult = -100;    private EditText etVerify;    private Button btnVerify;    private TextView tvVerify;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        btnLock = (Button) findViewById(R.id.btnLock);        etLock = (EditText) findViewById(R.id.etLock);        btnLock.setOnClickListener(new onClickListenerImp());        tvHideA = (TextView) findViewById(R.id.tvHideA);        tvHideB = (TextView) findViewById(R.id.tvHideB);        tvHideC = (TextView) findViewById(R.id.tvHideC);        tvHideD = (TextView) findViewById(R.id.tvHideD);        tvHideE = (TextView) findViewById(R.id.tvHideE);        tvHideF = (TextView) findViewById(R.id.tvHideF);        tvHideG = (TextView) findViewById(R.id.tvHideG);        ivNumA = (ImageView) findViewById(R.id.ivNumA);        ivNumB = (ImageView) findViewById(R.id.ivNumB);        ivNumC = (ImageView) findViewById(R.id.ivNumC);        ivNumD = (ImageView) findViewById(R.id.ivNumD);        // 计算类型的验证码        ivNumE = (ImageView) findViewById(R.id.ivNumE);        ivNumF = (ImageView) findViewById(R.id.ivNumF);        ivNumG = (ImageView) findViewById(R.id.ivNumG);        etVerify = (EditText) findViewById(R.id.etVerify);        btnVerify = (Button) findViewById(R.id.btnVerify);        btnVerify.setOnClickListener(new onClickListenerImp());        tvVerify = (TextView) findViewById(R.id.tvVerify);        tvCheck = (TextView) findViewById(R.id.tvCheck);        etCheck = (EditText) findViewById(R.id.etCheck);        btnCheck = (Button) findViewById(R.id.btnCheck);        btnCheck.setOnClickListener(new onClickListenerImp());        setNum();        setVerify();    }    /**     * 计算类型的验证码     */    private void setVerify() {        initStrVerify();        tvHideE.setText(strVerify[0]);        tvHideE.setTextColor(randomColor());        tvHideG.setText(strVerify[1]);        tvHideG.setTextColor(randomColor());        tvHideF.setText(strVerify[2]);        tvHideF.setTextColor(randomColor());        // Num 1        Matrix matrixE = new Matrix();        matrixE.reset();        matrixE.setRotate(randomAngle());        Bitmap bmNumE = Bitmap.createBitmap(getBitmapFromView(tvHideE, 50, 50), 0, 0, 50, 50, matrixE, true);        ivNumE.setImageBitmap(bmNumE);        //Operator        Matrix matrixF = new Matrix();        matrixF.reset();        matrixF.setRotate(randomAngle());        Bitmap bmNumF = Bitmap.createBitmap(getBitmapFromView(tvHideF, 70, 50), 0, 0, 70, 50, matrixF, true);        ivNumF.setImageBitmap(bmNumF);        // Num2        Matrix matrixG = new Matrix();        matrixG.reset();        matrixG.setRotate(randomAngle());        Bitmap bmNumG = Bitmap.createBitmap(getBitmapFromView(tvHideG, 50, 50), 0, 0, 50, 50, matrixG, true);        ivNumG.setImageBitmap(bmNumG);    }    private void initStrVerify() {        // 获得两个不相等运算数值：0-9        do {            intVerify[0] = new Random().nextInt(10);            intVerify[1] = new Random().nextInt(10);        } while (intVerify[0] == intVerify[1]);        // 获得运算符号：+，-，x        intVerify[2] = new Random().nextInt(3);        if (intVerify[2] == 0) {            intResult = intVerify[0] + intVerify[1];            strVerify[2] = "加上";        } else if (intVerify[2] == 1) {            intResult = intVerify[0] - intVerify[1];            strVerify[2] = "减去";        } else if (intVerify[2] == 2) {            intResult = intVerify[0] * intVerify[1];            strVerify[2] = "乘以";        } else {            intResult = -100;            strVerify[2] = "呵呵";        }        strVerify[0] = numToCharacter(intVerify[0]);        strVerify[1] = numToCharacter(intVerify[1]);    }    private String numToCharacter(int num) {        switch (num) {            case 0:                return "零";            case 1:                return "一";            case 2:                return "二";            case 3:                return "三";            case 4:                return "四";            case 5:                return "五";            case 6:                return "六";            case 7:                return "七";            case 8:                return "八";            case 9:                return "九";            default:                return "错";        }    }    private class onClickListenerImp implements View.OnClickListener {        @Override        public void onClick(View view) {            if (view == btnLock) {                if (etLock.isEnabled()) {                    etLock.setEnabled(false);                    btnLock.setText("解锁");                } else {                    etLock.setEnabled(true);                    btnLock.setText("锁定");                }            } else if (view == btnCheck) {                if (etCheck.getText().toString() != null && etCheck.getText().toString().trim().length() > 0) {                    tvCheck.setVisibility(View.VISIBLE);                    if (numStr.equals(etCheck.getText().toString())) {                        tvCheck.setText("输入正确");                        tvCheck.setTextColor(Color.GREEN);                    } else {                        tvCheck.setText("输入错误");                        tvCheck.setTextColor(Color.RED);                    }                } else {                    setNum();                    tvCheck.setVisibility(View.GONE);                }            } else if (view == btnVerify) {                if (etVerify.getText().toString() != null && etVerify.getText().toString().trim().length() > 0) {                    tvVerify.setVisibility(View.VISIBLE);                    if (etVerify.getText().toString().equals(String.valueOf(intResult))) {                        tvVerify.setText("正确");                        tvVerify.setTextColor(Color.GREEN);                    } else {                        tvVerify.setText("错误");                        tvVerify.setTextColor(Color.RED);                    }                } else {                    setVerify();                    tvVerify.setVisibility(View.GONE);                }            }        }    }    public void initNum() {        numStr = "";        numStrTmp = "";        for (int i = 0; i < numArray.length; i++) {            int numIntTmp = new Random().nextInt(10);            numStrTmp = String.valueOf(numIntTmp);            numStr = numStr + numStrTmp;            numArray[i] = numIntTmp;        }    }    public void setNum() {        initNum();        tvHideA.setText("" + numArray[0]);        tvHideA.setTextColor(randomColor());        tvHideB.setText("" + numArray[1]);        tvHideB.setTextColor(randomColor());        tvHideC.setText("" + numArray[2]);        tvHideC.setTextColor(randomColor());        tvHideD.setText("" + numArray[3]);        tvHideD.setTextColor(randomColor());        // Num 1        Matrix matrixA = new Matrix();        matrixA.reset();        matrixA.setRotate(randomAngle());        Bitmap bmNumA = Bitmap.createBitmap(getBitmapFromView(tvHideA, 20, 50), 0, 0, 20, 50, matrixA, true);        ivNumA.setImageBitmap(bmNumA);        // Num 2        Matrix matrixB = new Matrix();        matrixB.reset();        matrixB.setRotate(randomAngle());        Bitmap bmNumB = Bitmap.createBitmap(getBitmapFromView(tvHideB, 20, 50), 0, 0, 20, 50, matrixB, true);        ivNumB.setImageBitmap(bmNumB);        // Num 3        Matrix matrixC = new Matrix();        matrixC.reset();        matrixC.setRotate(randomAngle());        Bitmap bmNumC = Bitmap.createBitmap(getBitmapFromView(tvHideC, 20, 50), 0, 0, 20, 50, matrixC, true);        ivNumC.setImageBitmap(bmNumC);        // Num 4        Matrix matrixD = new Matrix();        matrixD.reset();        matrixD.setRotate(randomAngle());        Bitmap bmNumD = Bitmap.createBitmap(getBitmapFromView(tvHideD, 20, 50), 0, 0, 20, 50, matrixD, true);        ivNumD.setImageBitmap(bmNumD);    }    public int randomAngle() {        return 20 * (new Random().nextInt(5) - new Random().nextInt(3));    }    public int randomColor() {        colorArray[0] = 0xFF000000; // BLACK        colorArray[1] = 0xFFFF00FF; // MAGENTA        colorArray[2] = 0xFFFF0000; // RED        colorArray[3] = 0xFF00FF00; // GREEN        colorArray[4] = 0xFF0000FF; // BLUE        colorArray[5] = 0xFF00FFFF; // CYAN        //colorArray[6] = 0xFFFFFF00; // YELLOW:看不清楚        int randomColorId = new Random().nextInt(6);        return colorArray[randomColorId];    }    public static Bitmap getBitmapFromView(View view, int width, int height) {        int widthSpec = View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY);        int heightSpec = View.MeasureSpec.makeMeasureSpec(height, View.MeasureSpec.EXACTLY);        view.measure(widthSpec, heightSpec);        view.layout(0, 0, width, height);        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);        Canvas canvas = new Canvas(bitmap);        view.draw(canvas);        return bitmap;    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);        return true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();        //noinspection SimplifiableIfStatement        if (id == R.id.action_settings) {            return true;        }        return super.onOptionsItemSelected(item);    }}

Main.xml:

<LinearLayout 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:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:paddingBottom="@dimen/activity_vertical_margin"    android:orientation="vertical"    tools:context=".Main">    <TextView        android:layout_width="wrap_content"        android:text="锁定EditText内容："        android:layout_height="wrap_content" />    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <EditText            android:id="@+id/etLock"            android:layout_width="200dp"            android:layout_height="wrap_content" />        <Button            android:id="@+id/btnLock"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="锁定" />    </LinearLayout>    <TextView        android:layout_marginTop="50dp"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="数字类型验证码：" />    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <LinearLayout            android:orientation="horizontal"            android:layout_width="wrap_content"            android:layout_height="wrap_content">            <TextView                android:id="@+id/tvHideA"                android:layout_width="70dp"                android:layout_height="70dp"                android:textSize="30dp"                android:gravity="center"                android:visibility="gone" />            <TextView                android:id="@+id/tvHideB"                android:layout_width="70dp"                android:layout_height="70dp"                android:textSize="30dp"                android:gravity="center"                android:visibility="gone" />            <TextView                android:id="@+id/tvHideC"                android:layout_width="70dp"                android:layout_height="70dp"                android:textSize="30dp"                android:gravity="center"                android:visibility="gone" />            <TextView                android:id="@+id/tvHideD"                android:layout_width="70dp"                android:layout_height="70dp"                android:textSize="30dp"                android:gravity="center"                android:visibility="gone" />        </LinearLayout>        <LinearLayout            android:layout_width="wrap_content"            android:orientation="horizontal"            android:layout_height="wrap_content">            <ImageView                android:id="@+id/ivNumA"                android:layout_width="50dp"                android:layout_height="70dp" />            <ImageView                android:id="@+id/ivNumB"                android:layout_width="50dp"                android:layout_height="70dp" />            <ImageView                android:id="@+id/ivNumC"                android:layout_width="50dp"                android:layout_height="70dp" />            <ImageView                android:id="@+id/ivNumD"                android:layout_width="50dp"                android:layout_height="70dp" />            <EditText                android:id="@+id/etCheck"                android:hint="验证码"                android:inputType="number"                android:layout_width="80dp"                android:layout_height="wrap_content" />            <Button                android:id="@+id/btnCheck"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="确定" />            <TextView                android:id="@+id/tvCheck"                android:text="结果"                android:visibility="gone"                android:layout_width="wrap_content"                android:layout_height="wrap_content" />        </LinearLayout>    </LinearLayout>    <TextView        android:layout_width="wrap_content"        android:text="计算类型验证码:"        android:layout_marginTop="50dp"        android:layout_height="wrap_content" />    <LinearLayout        android:layout_width="fill_parent"        android:orientation="horizontal"        android:layout_height="wrap_content">        <TextView            android:id="@+id/tvHideE"            android:visibility="gone"            android:textSize="25dp"            android:layout_width="wrap_content"            android:layout_height="wrap_content" />        <TextView            android:id="@+id/tvHideF"            android:visibility="gone"            android:textSize="30dp"            android:layout_width="70dp"            android:layout_height="wrap_content" />        <TextView            android:id="@+id/tvHideG"            android:visibility="gone"            android:textSize="25dp"            android:layout_width="wrap_content"            android:layout_height="wrap_content" />        <ImageView            android:id="@+id/ivNumE"            android:layout_width="50dp"            android:layout_height="70dp" />        <ImageView            android:id="@+id/ivNumF"            android:layout_width="70dp"            android:layout_height="70dp" />        <ImageView            android:id="@+id/ivNumG"            android:layout_width="50dp"            android:layout_height="70dp" />        <EditText            android:id="@+id/etVerify"            android:hint="计算结果"            android:inputType="numberSigned"            android:layout_width="80dp"            android:layout_height="wrap_content" />        <Button            android:id="@+id/btnVerify"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="校验" />        <TextView            android:layout_width="wrap_content"            android:text="结果"            android:visibility="gone"            android:id="@+id/tvVerify"            android:layout_height="wrap_content" />    </LinearLayout></LinearLayout>

转载请注明出处：周木水的CSDN博客 http://blog.csdn.net/zhoumushui