小學四則運算口算練習app---No.4

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今天主要是改了出題頁中各個組件的位置以及時間的接收還有時間控制，代碼如下：（但是存在一個問題  設定頁面點擊確定按鈕進入出題介面時有時會閃退，未解決！）

CalculatorActivity.class

package com.example.mmmjh.calculator;
import android.os.Build;
import android.os.Bundle;
import java.util.Random;
import android.os.Bundle;
import android.os.SystemClock;
import android.app.AlertDialog;
import android.app.Activity;
import android.content.Intent;
import android.support.annotation.RequiresApi;
import android.text.InputType;
import android.text.TextUtils;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.content.DialogInterface;
import android.widget.Button;
import android.widget.Chronometer;
import android.widget.Chronometer.OnChronometerTickListener;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.view.ViewGroup;
import android.widget.RelativeLayout;
;
public class CalculatorActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_calculator);

        LinearLayout linearLayout = (LinearLayout)findViewById(R.id.viewObj);
        RelativeLayout relativeLayout = new RelativeLayout(this);

        Intent inten = getIntent();
        Bundle bundle = inten.getExtras();
        String tishu = bundle.getString("tishu");//接收傳過來的題目的數量

        String min = bundle.getString("minute");
        String sec = bundle.getString("second");//接收時間

        int i1 = 0, minute = 0, second = 0;
        try {
            i1 = Integer.parseInt(tishu);//i1在這裡是題目數量的整形值
            minute = Integer.parseInt(min);
            second = Integer.parseInt(sec);
        } catch (NumberFormatException e) {
            e.printStackTrace();
        }


        final EditText[] input = new EditText[i1];
        TextView[] showti = new TextView[i1];
        final int[] shu1 = new int[i1];
        final int[] shu2 = new int[i1];
        final int[] result = new int[i1];
        final String[] user = new String[i1];
        final String[] show = new String[i1];
        LinearLayout ll = (LinearLayout) findViewById(R.id.viewObj);

        Random r = new Random();
        char[] ch = {‘+‘, ‘-‘, ‘ב, ‘÷‘}; //字元數組

        final Chronometer ch1 = new Chronometer(this);
        ch1.setBase(SystemClock.elapsedRealtime());
        ch1.setFormat("經過時間：%s");
        ch1.start();
        ll.addView(ch1);
        for (int i = 0; i < i1; i++) {
            int index = r.nextInt(ch.length); //隨機數，小於數組的長度數, 0~3
            char flag = ch[index];//擷取運算子號
            String d = String.valueOf(flag);//運算子
            show[i] = "";
            int a = (int) (Math.random() * 100);
            int b = (int) (Math.random() * 100);

            shu1[i] = a;
            shu2[i] = b;

            while ((d.equals("+") && (a + b > 100)) || (d.equals("-") && (a - b <= 0)) || (d.equals("×") && (a > 9 || a < 1 || b > 9 || b < 1)) || (d.equals("÷") && (a / b > 9 || a % b != 0 || a > 81 || b > 9 || a < b))) {
                a = (int) (Math.random() * 100);
                b = (int) (Math.random() * 100);
            }

            if (d.equals("+"))
                result[i] = a + b;
            else if (d.equals("-"))
                result[i] = a - b;
            else if (d.equals("×"))
                result[i] = a * b;
            else
                result[i] = a / b;
            String sa = Integer.toString(a);
            String sb = Integer.toString(b);
            showti[i] = new TextView(this);
            show[i] += "\n" + sa + d + sb + "=";
            showti[i].setTextSize(20);
            showti[i].setText(show[i]);
            showti[i].setId(View.generateViewId());
            input[i] = new EditText(this);
            input[i].setTextSize(25);
            input[i].setInputType(InputType.TYPE_CLASS_NUMBER);
            input[i].setId(View.generateViewId());
            input[i].setEms(6);
            RelativeLayout.LayoutParams layoutParams =
                    new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                            ViewGroup.LayoutParams.WRAP_CONTENT);
            if(i == 0)
            {
                layoutParams.setMargins(250,0,0,0);
                showti[i].setLayoutParams(layoutParams);
                relativeLayout.addView(showti[i]);
            }
            else {
                layoutParams.addRule(RelativeLayout.BELOW,showti[i-1].getId());
                layoutParams.setMargins(250,0,0,0);
                showti[i].setLayoutParams(layoutParams);
                relativeLayout.addView(showti[i]);
            }

            layoutParams =
                    new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                            ViewGroup.LayoutParams.WRAP_CONTENT);
            layoutParams.addRule(RelativeLayout.RIGHT_OF,showti[i].getId());
            if(i != 0)layoutParams.addRule(RelativeLayout.BELOW,showti[i-1].getId());
            input[i].setLayoutParams(layoutParams);
            relativeLayout.addView(input[i]);
        }
        linearLayout.addView(relativeLayout);
        final Button finish = new Button(this);
        finish.setText("完成");
        LinearLayout.LayoutParams layoutParams =
                new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                        ViewGroup.LayoutParams.WRAP_CONTENT);
        finish.setLayoutParams(layoutParams);
        linearLayout.addView(finish);

        final int timeover = minute * 60 + second;

        ch1.setOnChronometerTickListener(new OnChronometerTickListener() {
            @Override
            public void onChronometerTick(Chronometer arg0) {
                // TODO Auto-generated method stub
                if(SystemClock.elapsedRealtime()-ch1.getBase()>=timeover*1000){
                    AlertDialog.Builder builder1 = new AlertDialog.Builder(CalculatorActivity.this)
                            .setMessage("時間到！")
                            .setPositiveButton("確認", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {

                                    for (int i = 0; i < shu1.length; i++) {
                                        if (TextUtils.isEmpty(input[i].getText())) {
                                            user[i] = "未作答";
                                        } else {
                                            user[i] = input[i].getText().toString();
                                        }
                                    }
                                 
                                    Intent intent = new Intent();
                                   
                                    intent.setClass(CalculatorActivity.this, resultActivity.class);//跳轉
                                    startActivity(intent);
                                //    CalculatorActivity.this.finish();
                                    dialog.dismiss();
                                }
                            });

                    builder1.create().show();

                    finish.callOnClick();
                }

            }
        });

        finish.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {//觸及按鈕事件完成頁面跳轉  進入答案頁面
                // TODO Auto-generated method stub

                    for (int i = 0; i < user.length; i++) {
                        if (TextUtils.isEmpty(input[i].getText())) {
                            user[i] = "未作答";
                        } else {
                            user[i] = input[i].getText().toString();
                        }
                    }
                ch1.stop();
               
                if(SystemClock.elapsedRealtime()-ch1.getBase()<timeover*1000){
                intent.setClass(CalculatorActivity.this, resultActivity.class);//跳轉
                startActivity(intent);
              //  CalculatorActivity.this.finish();//注釋了這句話按手機上的返回鍵可以返回上一層
                    }
            }
        });
    }
}

結果如下：

 

布局頁面：activity_calculator

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:background="@mipmap/qq"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    tools:context=".resultActivity" >



    <!--TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="題目"/-->
    <LinearLayout
        android:id="@+id/viewObj"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:textSize="25sp"
        android:textColor="#7300ff"
        android:layout_x="1px"
        android:layout_y="1px" />

</ScrollView>


這次加了彈出框的設定，主要有兩種樣式Toast和Alert.使用方法詳見文章：http://blog.csdn.net/dearmali/article/details/49885759

Android提供常用的訊息彈出框，Toast和Alert。

小學四則運算口算練習app---No.4