Android使用表格布局设计注册界面
更新时间:2021年05月21日 08:40:24 作者:nuist__NJUPT
这篇文章主要为大家详细介绍了Android使用表格布局设计注册界面,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
Android中使用表格布局设计注册界面,供大家参考,具体内容如下
注册页面包含:用户名,密码,确认密码,验证码。验证码使用一个封装好的工具类生成的,可以直接使用。效果图如下所示。没有做事件处理,仅仅做了个简单的表格布局。
XML布局的代码如下:
<?xml version="1.0" encoding="utf-8"?> <TableLayout 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:stretchColumns="1" tools:context="com.example.nuist__njupt.register.MainActivity"> <TextView android:id="@+id/register_title" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="用户注册" android:textSize="20dp" android:gravity="center_horizontal" android:textColor="@android:color/black" android:layout_marginTop="5dp" /> <TableRow> <TextView android:id="@+id/user_name" android:text="用户名" android:textSize="15dp" android:layout_marginLeft="5dp" android:layout_marginTop="20dp" android:textColor="@android:color/black" /> <EditText android:layout_width="match_parent" android:id="@+id/input_name" android:hint="请输入用户名" android:textSize="15dp" android:layout_marginTop="20dp" android:selectAllOnFocus="true" android:layout_span="2" /> </TableRow> <TableRow> <TextView android:id="@+id/user_password" android:text="密码" android:textSize="15dp" android:layout_marginLeft="5dp" android:textColor="@android:color/black" /> <EditText android:layout_width="match_parent" android:id="@+id/input_password" android:hint="请输入密码" android:textSize="15dp" android:inputType="textPassword" android:layout_span="2" /> </TableRow> <TableRow> <TextView android:id="@+id/confirm_password" android:text="确认密码" android:textSize="15dp" android:layout_marginLeft="5dp" android:textColor="@android:color/black" /> <EditText android:layout_width="match_parent" android:id="@+id/input_confirm" android:hint="请再次输入密码" android:textSize="15dp" android:inputType="textPassword" android:layout_span="2" /> </TableRow> <TableRow> <TextView android:id="@+id/test_password" android:text="验证码" android:textSize="15dp" android:layout_marginLeft="5dp" android:textColor="@android:color/black" /> <EditText android:layout_width="match_parent" android:id="@+id/input_test" android:hint="请输入验证密码" android:textSize="15dp" android:layout_toLeftOf ="@+id/image" /> <ImageView android:id="@+id/image" android:layout_width="100dp" android:layout_height="40dp"/> </TableRow> <Button android:id="@+id/register" android:layout_height="wrap_content" android:layout_width="match_parent" android:text="注册" android:textColor="@android:color/black" android:textSize="15dp" android:gravity="center_horizontal" /> <Button android:id="@+id/cancel" android:layout_height="wrap_content" android:layout_width="match_parent" android:text="取消" android:textColor="@android:color/black" android:textSize="15dp" android:gravity="center_horizontal" /> </TableLayout>
java代码如下:
public class MainActivity extends AppCompatActivity { private Bitmap bitmap; private String code; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final ImageView image = (ImageView) findViewById(R.id.image); //获取需要展示图片验证码的ImageView bitmap = CodeUtils.getInstance().createBitmap(); //获取工具类生成的图片验证码对象 code = CodeUtils.getInstance().getCode(); //获取当前图片验证码的对应内容用于校验 image.setImageBitmap(bitmap); image.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { bitmap = CodeUtils.getInstance().createBitmap(); code = CodeUtils.getInstance().getCode(); image.setImageBitmap(bitmap); Toast.makeText(MainActivity.this, code, Toast.LENGTH_SHORT).show(); //图片验证码内容提示 } }); } }
工具类CodeUtils的代码如下:
/** * Created by nuist__NJUPT on 2021/4/16. */ public class CodeUtils { //随机码集 private static final char[] CHARS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', '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', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' }; private static CodeUtils mCodeUtils; private int mPaddingLeft, mPaddingTop; private StringBuilder mBuilder = new StringBuilder(); private Random mRandom = new Random(); //Default Settings private static final int DEFAULT_CODE_LENGTH = 4;//验证码的长度 这里是4位 private static final int DEFAULT_FONT_SIZE = 60;//字体大小 private static final int DEFAULT_LINE_NUMBER = 3;//多少条干扰线 private static final int BASE_PADDING_LEFT = 20; //左边距 private static final int RANGE_PADDING_LEFT = 30;//左边距范围值 private static final int BASE_PADDING_TOP = 70;//上边距 private static final int RANGE_PADDING_TOP = 15;//上边距范围值 private static final int DEFAULT_WIDTH = 200;//默认宽度.图片的总宽 private static final int DEFAULT_HEIGHT = 100;//默认高度.图片的总高 private static final int DEFAULT_COLOR = Color.rgb(0xee, 0xee, 0xee);//默认背景颜色值 private String code; public static CodeUtils getInstance() { if (mCodeUtils == null) { mCodeUtils = new CodeUtils(); } return mCodeUtils; } //生成验证码图片 public Bitmap createBitmap() { mPaddingLeft = 0; //每次生成验证码图片时初始化 mPaddingTop = 0; Bitmap bitmap = Bitmap.createBitmap(DEFAULT_WIDTH, DEFAULT_HEIGHT, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); code = createCode(); canvas.drawARGB(0, 0, 0, 0); canvas.drawColor(DEFAULT_COLOR); Paint paint = new Paint(); paint.setTextSize(DEFAULT_FONT_SIZE); for (int i = 0; i < code.length(); i++) { randomTextStyle(paint); randomPadding(); canvas.drawText(code.charAt(i) + "", mPaddingLeft, mPaddingTop, paint); } //干扰线 for (int i = 0; i < DEFAULT_LINE_NUMBER; i++) { drawLine(canvas, paint); } canvas.save();//保存 canvas.restore(); return bitmap; } /** * 得到图片中的验证码字符串 * * @return */ public String getCode() { return code; } //生成验证码 public String createCode() { mBuilder.delete(0, mBuilder.length()); //使用之前首先清空内容 for (int i = 0; i < DEFAULT_CODE_LENGTH; i++) { mBuilder.append(CHARS[mRandom.nextInt(CHARS.length)]); } return mBuilder.toString(); } //生成干扰线 private void drawLine(Canvas canvas, Paint paint) { int color = randomColor(); int startX = mRandom.nextInt(DEFAULT_WIDTH); int startY = mRandom.nextInt(DEFAULT_HEIGHT); int stopX = mRandom.nextInt(DEFAULT_WIDTH); int stopY = mRandom.nextInt(DEFAULT_HEIGHT); paint.setStrokeWidth(1); paint.setColor(color); canvas.drawLine(startX, startY, stopX, stopY, paint); } //随机颜色 private int randomColor() { mBuilder.delete(0, mBuilder.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(0xEE)); if (haxString.length() == 1) { haxString = "0" + haxString; } mBuilder.append(haxString); } return Color.parseColor("#" + mBuilder.toString()); } //随机文本样式 private void randomTextStyle(Paint paint) { int color = randomColor(); paint.setColor(color); paint.setFakeBoldText(mRandom.nextBoolean()); //true为粗体,false为非粗体 float skewX = mRandom.nextInt(11) / 10; skewX = mRandom.nextBoolean() ? skewX : -skewX; paint.setTextSkewX(skewX); //float类型参数,负数表示右斜,整数左斜 paint.setUnderlineText(mRandom.nextBoolean()); //true为下划线,false为非下划线 paint.setStrikeThruText(mRandom.nextBoolean()); //true为删除线,false为非删除线 } //随机间距 private void randomPadding() { mPaddingLeft += BASE_PADDING_LEFT + mRandom.nextInt(RANGE_PADDING_LEFT); mPaddingTop = BASE_PADDING_TOP + mRandom.nextInt(RANGE_PADDING_TOP); } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。
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