Android鎖定EditText內容和隨機產生驗證碼

標籤：android   驗證碼   鎖定edittext   隨機驗證碼   

昨天寫了個小Demo，實現了隨機產生驗證碼，和鎖定EditText兩個小功能，先看一下：

鎖定EditText在我們不需要使用者編輯EditText內容的時候可以用到，實現還是很簡單的，一行代碼：

etLock.setEnabled(false);

隨機產生驗證碼，主要是用了Random函數，以及將View轉為Bitmap的邏輯，也沒有痛點，下面貼一下代碼，供需要的朋友參考：

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 ImageView ivNumA;    private ImageView ivNumB;    private ImageView ivNumC;    private ImageView ivNumD;    private Button btnCheck;    private TextView tvCheck;    private EditText etCheck;    @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);        ivNumA = (ImageView) findViewById(R.id.ivNumA);        ivNumB = (ImageView) findViewById(R.id.ivNumB);        ivNumC = (ImageView) findViewById(R.id.ivNumC);        ivNumD = (ImageView) findViewById(R.id.ivNumD);        tvCheck = (TextView) findViewById(R.id.tvCheck);        etCheck = (EditText) findViewById(R.id.etCheck);        btnCheck = (Button) findViewById(R.id.btnCheck);        btnCheck.setOnClickListener(new onClickListenerImp());        setNum();    }    private class onClickListenerImp implements View.OnClickListener {        @Override        public void onClick(View view) {            if (view == btnLock) {                if (etLock.isEnabled()) {                    etLock.setEnabled(false);                    btnLock.setText("解鎖");                } else {                    etLock.setEnabled(true);                    btnLock.setText("鎖定");                }            } 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("輸入正確");                        tvCheck.setTextColor(Color.GREEN);                    } else {                        tvCheck.setText("輸入錯誤");                        tvCheck.setTextColor(Color.RED);                    }                } else {                    setNum();                    tvCheck.setVisibility(View.GONE);                    //Toast.makeText(Main.this, "Please Input Verify Code", Toast.LENGTH_SHORT).show();                }            }        }    }    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);    }}

布局檔案： 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="鎖定EditText內容："        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="鎖定" />    </LinearLayout>    <TextView        android:layout_marginTop="50dp"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="隨機產生4位驗證碼：" />    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <LinearLayout            android:id="@+id/layVerify"            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" />        </LinearLayout>    </LinearLayout>    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <EditText            android:id="@+id/etCheck"            android:hint="驗證碼"            android:layout_width="80dp"            android:layout_height="wrap_content" />        <TextView            android:id="@+id/tvCheck"            android:text="結果"            android:visibility="gone"            android:layout_width="wrap_content"            android:layout_height="wrap_content" />    </LinearLayout>    <Button        android:id="@+id/btnCheck"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="確定" /></LinearLayout>

有疑問歡迎交流~

還是上傳一下代碼吧，是用Android Studio寫的。連結：代碼下載

轉載請註明出處：周木水的CSDN部落格 http://blog.csdn.net/zhoumushui

我的GitHub：周木水的GitHub https://github.com/zhoumushui

Android鎖定EditText內容和隨機產生驗證碼