安卓软键盘刷新布局问题

最新推荐文章于 2024-04-10 08:13:13 发布

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最新推荐文章于 2024-04-10 08:13:13 发布

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文章标签： android 布局验证码 canvas

本文链接：https://blog.youkuaiyun.com/android_xiaobai1/article/details/67647734

本人安卓菜鸟，在开发一个注册页面的时候要用到输入验证码的问题，这就涉及到自定义View的创建，问题来了，当我在点击edittext软键盘自动弹出的时候，我意外的发现验证码自动刷新了。以下代码

public class MainActivity extends Activity {
private CheckView mCheckView;
private TextView forget, cancel;
private EditText username, password, phone, checknum;
private Button mSubmit;

private String message;
// 验证码：
private int[] checkNum = null;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.register);
initView();
initCheckNum();
}

public void initView() {
mCheckView = (CheckView) findViewById(R.id.register_checkView);
mCheckView.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
initCheckNum();
}
});
// 2个textview
forget = (TextView) findViewById(R.id.register_gotaccount);
cancel = (TextView) findViewById(R.id.register_outside);
// 4个edittext
username = (EditText) findViewById(R.id.register_Username);
password = (EditText) findViewById(R.id.register_Password);
phone = (EditText) findViewById(R.id.register_phone);
checknum = (EditText) findViewById(R.id.register_checknumber);
// 1个button
mSubmit = (Button) findViewById(R.id.register_sign_in);
}

// 初始化验证码并且刷新界面
public void initCheckNum() {
checkNum = CheckUtil.getCheckNum();
mCheckView.setCheckNum(checkNum);
mCheckView.invaliChenkNum();
}
}

*自定义的view

public class CheckView extends View {
Context mContext;
int[] CheckNum = null;
Paint mTempPaint = new Paint();

private StringBuffer sb = new StringBuffer();
private Random mRandom = new Random();

// 验证码

public CheckView(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
mTempPaint.setAntiAlias(true);
mTempPaint.setTextSize(Config.TEXT_SIZE);
mTempPaint.setStrokeWidth(3);
}

public void onDraw(Canvas canvas) {
canvas.drawColor(randomColor());
Log.i("---TAG---", "onDraw ");
final int height = this.getHeight();// 获得CheckView控件的高度
final int width = this.getWidth();// 获得CheckView控件的宽度
int dx = 10;
// 绘制验证控件上的文本
for (int i = 0; i < Config.TEXT_LENGTH; i++) {
mTempPaint.setColor(Color.RED);
canvas.drawText("" + CheckNum[i], dx, CheckUtil.getPositon(height),
mTempPaint);
dx += width / Config.TEXT_LENGTH + 1;// 数字之间的间距
}
int[] line;
// 划线
for (int i = 0; i < Config.LINE_NUM; i++) {
mTempPaint.setColor(randomColor());
line = CheckUtil.getLine(height, width);
canvas.drawLine(line[0], line[1], line[2], line[3], mTempPaint);
}
// 绘制小圆点
int[] point;
// 画点
for (int i = 0; i < Config.POINT_NUM; i++) {
point = CheckUtil.getPoint(height, width);
canvas.drawCircle(point[0], point[1], 1, mTempPaint);
}
}

/**
* 随机颜色
*/
private int randomColor() {
sb.delete(0, sb.length()); // 使用之前首先清空内容
String haxString;
for (int i = 0; i < 3; i++) {
haxString = Integer.toHexString(mRandom.nextInt(0xFF));
if (haxString.length() == 1) {
haxString = "0" + haxString;
}
sb.append(haxString);
}
return Color.parseColor("#" + sb.toString());
}

public void setCheckNum(int[] chenckNum) {// 设置验证码
CheckNum = chenckNum;
}

public int[] getCheckNum() {// 获得验证码
return CheckNum;
}

public void invaliChenkNum() {
invalidate();
}
}

/**
* 功能：验证码相关工具类
* */
public class CheckUtil {

/**
* 产生随机数字
*
* @return
*/
public static int[] getCheckNum() {
int[] tempCheckNum = new int[Config.TEXT_LENGTH];
for (int i = 0; i < Config.TEXT_LENGTH; i++) {
tempCheckNum[i] = (int) (Math.random() * 10);
}
return tempCheckNum;
}

/**
* 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;
}

/**
* 验证是否正确
*
* @param userCheck
* 用户输入的验证码
* @param checkNum
* 验证控件产生的随机数
* @return
*/
public static boolean checkNum(String userCheck, int[] checkNum) {
if (userCheck.length() != Config.TEXT_LENGTH) {
return false;
}
String checkString = "";
for (int i = 0; i < Config.TEXT_LENGTH; i++) {
checkString += checkNum[i];
}
if (userCheck.equals(checkString)) {
return true;
} else {
return false;
}
}

/**
* 计算验证码的绘制y点位置
*
* @param height
* 传入CheckView的高度值
* @return
*/

public static int getPositon(int height) {
int tempPositoin = (int) (Math.random() * height);
Log.i("---TAG---", "tempPositoin IS " + tempPositoin);
if (tempPositoin < 40) {
tempPositoin += 20;
}
if (tempPositoin > 120) {
tempPositoin -= 20;
}
return tempPositoin;
}
}

/**
* 功能：用于对验证码控件参数的配置
* */
public class Config {

// 验证码更新时间
public static final int PTEDE_TIME = 1200;
// 点数设置
public static final int POINT_NUM = 100;
// 线段数设置
public static final int LINE_NUM = 4;
// 设置背景颜色
public static final int COLOR = Color.BLUE;
// 随机数据长度
public static int TEXT_LENGTH = 4;
// 设置验证码字体大小
public static int TEXT_SIZE = 35;
}

XML代码

<?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"
android:background="@drawable/brakground"
android:gravity="center"
android:fitsSystemWindows="true">

<LinearLayout
android:id="@+id/register_container"
android:layout_width="fill_parent"
android:layout_height="400dp"
android:orientation="vertical" >

<LinearLayout
android:id="@+id/register_Top"
android:layout_width="fill_parent"
android:layout_height="80dp"
android:gravity="center"
android:orientation="vertical" >

<TextView
android:id="@+id/register"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:gravity="center"
android:text="迅优账号注册"
android:textColor="#FFFFFF"
android:textSize="27sp" />
</LinearLayout>

<LinearLayout
android:id="@+id/register_center"
android:layout_width="fill_parent"
android:layout_height="250dp"
android:gravity="center"
android:orientation="vertical" >

<EditText
android:id="@+id/register_Username"
android:layout_width="200dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:background="@drawable/input_over"
android:ems="10"
android:gravity="center"
android:hint="UserName"
android:inputType="text"
android:singleLine="true" />

<EditText
android:id="@+id/register_Password"
android:layout_width="200dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:background="@drawable/input_over"
android:ems="10"
android:gravity="center"
android:hint="PassWord"
android:password="true"
android:singleLine="true" />

<EditText
android:id="@+id/register_phone"
android:layout_width="200dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:background="@drawable/input_over"
android:ems="10"
android:gravity="center"
android:hint="PhoneNumber"
android:singleLine="true" />

<LinearLayout
android:id="@+id/register_check"
android:layout_width="200dp"
android:layout_height="50dp"
android:layout_marginTop="10dp"
android:orientation="horizontal" >

<EditText
android:id="@+id/register_checknumber"
android:layout_width="100dp"
android:layout_height="50dp"
android:background="@drawable/input_over"
android:ems="10"
android:gravity="center"
android:hint="Num"
android:singleLine="true" />

<com.example.checkcode.CheckView
android:id="@+id/register_checkView"
android:layout_width="90dp"
android:layout_height="50dp"
android:layout_marginLeft="10dp" />
</LinearLayout>
</LinearLayout>

<RelativeLayout
android:id="@+id/register_Bottom"
android:layout_width="fill_parent"
android:layout_height="70dp"
android:layout_alignParentLeft="true"
android:layout_below="@id/login_center"
android:orientation="vertical" >

<Button
android:id="@+id/register_sign_in"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:layout_marginLeft="55dp"
android:layout_marginRight="55dp"
android:background="@drawable/background_button_div"
android:gravity="center"
android:text="立即注册"
android:textColor="#FFFFFF"
android:textSize="20sp" />

<TextView
android:id="@+id/register_gotaccount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@id/register_sign_in"
android:layout_marginLeft="55dp"
android:layout_marginTop="10dp"
android:text="立即登录"
android:textColor="#FFFFFF" />

<TextView
android:id="@+id/register_outside"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@id/register_sign_in"
android:layout_marginRight="55dp"
android:layout_marginTop="10dp"
android:text="取消注册"
android:textColor="#FFFFFF" />
</RelativeLayout>
</LinearLayout>
</RelativeLayout>