
生成圖形驗(yàn)證碼校驗(yàn)類(lèi)
package com.chao.createcode;
import java.util.Random;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Bitmap.Config;
public class Code {
private static final char[] CHARS = {
'2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'j', 'k', 'm',
'n', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'
};
private static Code bmpCode;
public static Code getInstance() {
if(bmpCode == null)
bmpCode = new Code();
return bmpCode;
}
//default settings
private static final int DEFAULT_CODE_LENGTH = 4;
private static final int DEFAULT_FONT_SIZE = 25;
private static final int DEFAULT_LINE_NUMBER = 2;
private static final int BASE_PADDING_LEFT = 10, RANGE_PADDING_LEFT = 15, BASE_PADDING_TOP = 15, RANGE_PADDING_TOP = 20;
private static final int DEFAULT_WIDTH = 100, DEFAULT_HEIGHT = 40;
//settings decided by the layout xml
//canvas width and height
private int width = DEFAULT_WIDTH, height = DEFAULT_HEIGHT;
//random word space and pading_top
private int base_padding_left = BASE_PADDING_LEFT, range_padding_left = RANGE_PADDING_LEFT,
base_padding_top = BASE_PADDING_TOP, range_padding_top = RANGE_PADDING_TOP;
//number of chars, lines; font size
private int codeLength = DEFAULT_CODE_LENGTH, line_number = DEFAULT_LINE_NUMBER, font_size = DEFAULT_FONT_SIZE;
//variables
private String code;
private int padding_left, padding_top;
private Random random = new Random();
//驗(yàn)證碼圖片
public Bitmap createBitmap() {
padding_left = 0;
Bitmap bp = Bitmap.createBitmap(width, height, Config.ARGB_8888);
Canvas c = new Canvas(bp);
code = createCode();
c.drawColor(Color.WHITE);
Paint paint = new Paint();
paint.setTextSize(font_size);
for (int i = 0; i < code.length(); i++) {
randomTextStyle(paint);
randomPadding();
c.drawText(code.charAt(i) + "", padding_left, padding_top, paint);
}
for (int i = 0; i < line_number; i++) {
drawLine(c, paint);
}
c.save( Canvas.ALL_SAVE_FLAG );//保存
c.restore();//
return bp;
}
public String getCode() {
return code;
}
//驗(yàn)證碼
private String createCode() {
StringBuilder buffer = new StringBuilder();
for (int i = 0; i < codeLength; i++) {
buffer.append(CHARS[random.nextInt(CHARS.length)]);
}
return buffer.toString();
}
private void drawLine(Canvas canvas, Paint paint) {
int color = randomColor();
int startX = random.nextInt(width);
int startY = random.nextInt(height);
int stopX = random.nextInt(width);
int stopY = random.nextInt(height);
paint.setStrokeWidth(1);
paint.setColor(color);
canvas.drawLine(startX, startY, stopX, stopY, paint);
}
private int randomColor() {
return randomColor(1);
}
private int randomColor(int rate) {
int red = random.nextInt(256) / rate;
int green = random.nextInt(256) / rate;
int blue = random.nextInt(256) / rate;
return Color.rgb(red, green, blue);
}
private void randomTextStyle(Paint paint) {
int color = randomColor();
paint.setColor(color);
paint.setFakeBoldText(random.nextBoolean()); //true為粗體,false為非粗體
float skewX = random.nextInt(11) / 10;
skewX = random.nextBoolean() ? skewX : -skewX;
paint.setTextSkewX(skewX); //float類(lèi)型參數(shù),負(fù)數(shù)表示右斜,整數(shù)左斜
// paint.setUnderlineText(true); //true為下劃線,false為非下劃線
// paint.setStrikeThruText(true); //true為刪除線,false為非刪除線
}
private void randomPadding() {
padding_left += base_padding_left + random.nextInt(range_padding_left);
padding_top = base_padding_top + random.nextInt(range_padding_top);
}
}Activity代碼
package com.chao.createcode;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
private ImageView iv_showCode;
private EditText et_phoneCode;
private EditText et_phoneNum;
//產(chǎn)生的驗(yàn)證碼
private String realCode;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et_phoneCode = (EditText) findViewById(R.id.et_phoneCodes);
Button but_toSetCode = (Button) findViewById(R.id.but_forgetpass_toSetCodes);
but_toSetCode.setOnClickListener(this);
iv_showCode = (ImageView) findViewById(R.id.iv_showCode);
//將驗(yàn)證碼用圖片的形式顯示出來(lái)
iv_showCode.setImageBitmap(Code.getInstance().createBitmap());
realCode = Code.getInstance().getCode();
iv_showCode.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.iv_showCode:
iv_showCode.setImageBitmap(Code.getInstance().createBitmap());
realCode = Code.getInstance().getCode();
System.out.println(realCode);
break;
case R.id.but_forgetpass_toSetCodes:
String phoneCode = et_phoneCode.getText().toString();
if(phoneCode.equalsIgnoreCase(realCode)){
Toast.makeText(MainActivity.this, phoneCode+"驗(yàn)證碼正確", Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(MainActivity.this, phoneCode+"驗(yàn)證碼錯(cuò)誤", Toast.LENGTH_SHORT).show();
}
break;
}
}
}布局XML
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <RelativeLayout android:layout_width="match_parent" android:layout_height="50dp" android:background="@color/main_color_white" > <TextView android:id="@+id/tv_title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="找回密碼" android:textColor="@color/loan_butBackground" android:textSize="20sp" /> </RelativeLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="40dp" android:layout_marginTop="30dp" android:orientation="vertical" android:layout_marginLeft="15dp" android:layout_marginRight="15dp" android:background="@drawable/linearlayout01"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center_vertical" android:orientation="horizontal" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:layout_marginRight="20dp" android:text="中國(guó)+86" android:textColor="#A2CD5A" android:textSize="16sp" /> <View android:layout_width="0.1dp" android:layout_height="match_parent" android:background="@color/loan_butBackground" /> <EditText android:id="@+id/et_forgetPass_PhoneNum" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:background="@null" android:digits="0123456789" android:hint="請(qǐng)?zhí)钊肽氖謾C(jī)號(hào)" android:inputType="number" android:maxLength="11" android:textSize="16sp" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="15dp" android:layout_marginRight="15dp" android:layout_marginTop="20dp" android:orientation="horizontal" > <LinearLayout android:layout_width="wrap_content" android:layout_height="40dp" android:background="@drawable/linearlayout01" > <EditText android:id="@+id/et_phoneCodes" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginLeft="10dp" android:layout_marginRight="10dp" android:background="@null" android:hint="請(qǐng)輸入右側(cè)驗(yàn)證碼" /> </LinearLayout> <ImageView android:id="@+id/iv_showCode" android:layout_width="100dp" android:layout_marginLeft="10dp" android:layout_height="match_parent" /> </LinearLayout> <Button android:id="@+id/but_forgetpass_toSetCodes" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="20dp" android:background="@drawable/buttonshape" android:text="獲取手機(jī)驗(yàn)證碼" android:textColor="@color/main_color_white" /> </LinearLayout>
參考網(wǎng)站:
http://dwtedx.com/itshare_349.html
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新聞名稱(chēng):手機(jī)端產(chǎn)生本地圖形驗(yàn)證碼-創(chuàng)新互聯(lián)
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