标签:code int demo random 验证码 private padding android public
‘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();
public Bitmap createBitmap() {
padding_left = 0;
Bitmap bp = Bitmap.createBitmap(width, height, Config.ARGB_8888);
Canvas c = new Canvas(bp
《Android学习笔记总结+最新移动架构视频+大厂安卓面试真题+项目实战源码讲义》
浏览器打开:qq.cn.hn/FTe 开源分享
);
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 );
c.restore();//
return bp;
}
public String getCode() {
return code;
}
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());
float skewX = random.nextInt(11) / 10;
skewX = random.nextBoolean() ? skewX : -skewX;
paint.setTextSkewX(skewX);
}
private void randomPadding() {
padding_left += base_padding_left + random.nextInt(range_padding_left);
padding_top = base_padding_top + random.nextInt(range_padding_top);
}
}
内部提供方法初始化和获取验证码内容
image_code.setImageBitmap(Code.getInstance().createBitmap()); //初始化验证码
Code.getInstance().getCode(); //获取验证码
计时器
public abstract class CountDownTimer {
/**
- Millis since epoch when alarm should stop.
执行的总时间
*/
private final long mMillisInFuture;
/**
- The interval in millis that the user receives callbacks
时间间隔
*/
private final long mCountdownInterval;
// 停止时间
private long mStopTimeInFuture;
/**
-
@param millisInFuture The number of millis in the future from the call
-
to {@link #start()} until the countdown is done and {@link #onFinish()}
-
is called.
-
@param countDownInterval The interval along the way to receive
-
{@link #onTick(long)} callbacks.
两参数构造函数,总时间,时间间隔
*/
public CountDownTimer(long millisInFuture, long countDownInterval) {
mMillisInFuture = millisInFuture;
mCountdownInterval = countDownInterval;
}
/**
- Cancel the countdown.
取消到timer
*/
public final void cancel() {
mHandler.removeMessages(MSG);
}
/**
- Start the countdown.
开始
*/
public synchronized final CountDownTimer start() {
if (mMillisInFuture <= 0) {
onFinish();
return this;
}
// 停止时间 = 系统启动时间 + 总计时间
mStopTimeInFuture = SystemClock.elapsedRealtime() + mMillisInFuture;
mHandler.sendMessage(mHandler.obtainMessage(MSG));
return this;
}
/**
-
Callback fired on regular interval.
-
@param millisUntilFinished The amount of time until finished.
*/
public abstract void onTick(long millisUntilFinished);
/**
- Callback fired when the time is up.
*/
public abstract void onFinish();
private static final int MSG = 1;
// handles counting down
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
synchronized (CountDownTimer.this) {
// 计算剩余总时间
final long millisLeft = mStopTimeInFuture - SystemClock.elapsedRealtime();
// 小于等于 0 ,回调 onFinish
if (millisLeft <= 0) {
onFinish();
} else if (millisLeft < mCountdownInterval) { // 小于计时间隔 ,delayed 一个消息
// no tick, just delay until done
sendMessageDelayed(obtainMessage(MSG), millisLeft);
} else {
long lastTickStart = SystemClock.elapsedRealtime();
onTick(millisLeft);
// take into account user’s onTick taking time to execute
long delay = lastTickStart + mCountdownInterval - SystemClock.elapsedRealtime();
// special case: user’s onTick took more than interval to
// complete, skip to next interval
while (delay < 0) delay += mCountdownInterval;
sendMessageDelayed(obtainMessage(MSG), delay);
}
}
}
};
使用:倒计时
final CountDownTimer timer = new CountDownTimer(60000, 1000) {
@Override
public void onTick(long millisUntilFinished) {
get_verfiy_code.setText(millisUntilFinished/1000 + “秒”);
}
@Override
public void onFinish() {
get_verfiy_code.setEnabled(true);
get_verfiy_code.setText(“获取验证码”);
}
};
点击按钮的时候:
get_verfiy_code.setEnabled(false);
timer.start();
popupwinow全部如下:
/**
-
Created by
-
xiaomi on 2017/9/8.
*/
public class VerifyPopupWindow {
/**
- 手机验证popupwindow
*/
private EditText phone_number;
private EditText input_image_code;
private ImageView image_code;
private EditText input_code;
private Button sure;
private String inputcode;
private String realCode;
private Button no_verify;
private CustomPopWindow mPopWindow;
private Button get_verfiy_code;
private Context mContext;
public VerifyPopupWindow(Context context){
this.mContext=context;
}
public void showPopupWindow(){
View contentView = LayoutInflater.from(mContext).inflate(R.layout.user_phone_number, null);
phone_number = (EditText) contentView.findViewById(R.id.phone_number); //填入手机号
input_image_code=(EditText)contentView.findViewById(R.id.input_image_code);//填入图片验证码
image_code=(ImageView)contentView.findViewById(R.id.image_code); //图片验证码
input_code=(EditText) contentView.findViewById(R.id.input_code); //填入手机验证码
sure=(Button)contentView.findViewById(R.id.user_verfiy_submit); //确定绑定
no_verify=(Button)contentView.findViewById(R.id.ignore_verfiy_submit); //暂不验证
get_verfiy_code=(Button)contentView.findViewById(R.id.get_verfiy_code);//获取手机验证码
final CountDownTimer timer = new CountDownTimer(60000, 1000) {
@Override
public void onTick(long millisUntilFinished) {
get_verfiy_code.setText(millisUntilFinished/1000 + “秒”);
}
@Override
public void onFinish() {
get_verfiy_code.setEnabled(true);
get_verfiy_code.setText(“获取验证码”);
}
};
image_code.setImageBitmap(Code.getInstance().createBitmap()); //初始化验证码
View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.image_code:
image_code.setImageBitmap(Code.getInstance().createBitmap());
break;
case R.id.user_verfiy_submit:
if (TextUtils.isEmpty(phone_number.getText().toString())){
Toast.makeText(mContext,“请您输入手机号码”, Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(input_code.getText().toString())){
Toast.makeText(mContext,“请您输入手机验证码”, Toast.LENGTH_SHORT).show();
return;
}
PostFormBuilder builder= OkHttpUtils.post();
builder
.addParams(“tel”,phone_number.getText().toString())
.addParams(“telyzm”,input_code.getText().toString());
标签:code,int,demo,random,验证码,private,padding,android,public 来源: https://blog.csdn.net/m0_64319166/article/details/121438624
本站声明: 1. iCode9 技术分享网(下文简称本站)提供的所有内容,仅供技术学习、探讨和分享; 2. 关于本站的所有留言、评论、转载及引用,纯属内容发起人的个人观点,与本站观点和立场无关; 3. 关于本站的所有言论和文字,纯属内容发起人的个人观点,与本站观点和立场无关; 4. 本站文章均是网友提供,不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属;如您发现该文章侵犯了您的权益,可联系我们第一时间进行删除; 5. 本站为非盈利性的个人网站,所有内容不会用来进行牟利,也不会利用任何形式的广告来间接获益,纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。