Question

如何创建一个Android移动应用程序，它将以毫秒为单位进行计数（从0开始），并要求用户输入＆＃34;我喜欢吃＃34;在EditText中单击“提交”。用户点击提交后，计数将停止，并出现一个对话框并显示计数结果。

   package com.example.labex4;

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends Activity implements OnClickListener {

    TextView textView1,textView2,textView3,textView4,displayValue;
    EditText nameTxt;
    Button button1;
    int count = 0;
    Timer T;

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

        T=new Timer();
        T.scheduleAtFixedRate(new TimerTask() {
            @Override
            public void run() {
                runOnUiThread(new Runnable()
                {
                    @Override
                    public void run()
                    {
                        displayValue.setText("count="+count);
                        count++;
                    }
                });
            }
        }, 0, 1);

        textView1 = (TextView)findViewById(R.id.textView1);
        textView2 = (TextView)findViewById(R.id.textView2);
        textView3 = (TextView)findViewById(R.id.textView3);
        textView4 = (TextView)findViewById(R.id.textView4);
        displayValue = (TextView)findViewById(R.id.displayValue);
        nameTxt = (EditText)findViewById(R.id.nameTxt);
        button1 = (Button)findViewById(R.id.button1);
        button1.setOnClickListener(this);


    }

    @Override
    public void onClick(View v) {
         T.cancel();
        dialog.editext.setText(""+count);
    }
}


***Here is The XML file***

<RelativeLayout 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"
    tools:context="${relativePackage}.${activityClass}" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:text="(Type Faster)"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="25dp"
        android:text="Miliseconds: " />

    <TextView
        android:id="@+id/displayValue"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/textView2"
        android:layout_toRightOf="@+id/textView2"
        android:text="displayvalue" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="26dp"
        android:text="Type this words: " />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView3"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="17dp"
        android:text="Frankie Jones Anak Saing"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <EditText
        android:id="@+id/nameTxt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/textView4"
        android:layout_marginTop="38dp"
        android:ems="10" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/nameTxt"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="37dp"
        android:text="Check" />

</RelativeLayout>

Answer 1

全局变量

int count = 0;
Timer T;

在setContentView

之后将以下代码放在onCreate中

T=new Timer();
        T.scheduleAtFixedRate(new TimerTask() {
            @Override
            public void run() {
                runOnUiThread(new Runnable()
                {
                    @Override
                    public void run()
                    {
                        //myTextView.setText("count="+count);
                        count++;
                    }
                });
            }
        }, 0, 1);

在Button OnCLick

<强>更新

 T.cancel();
    //Open popup or dialog or alert as per your choice and print the count value
    //dialog.editext.setText(""+count);

AlertDialog alertDialog = new AlertDialog.Builder(<YourActivityName>this).create(); //Read Update
        alertDialog.setTitle("You total time count");
        alertDialog.setMessage(String.valueof(count));

        alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
           public void onClick(DialogInterface dialog, int which) {
              // here you can add functions
               alertDialog.dismiss();
           }
        });

        alertDialog.show();  //<-- See This!
    }

根据您的要求，我正在粘贴全班

import android.app.Activity;
import android.app.Dialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import java.util.Timer;
import java.util.TimerTask;

public class MainActivity extends Activity implements OnClickListener {

    TextView textView1,textView2,textView3,textView4,displayValue;
    EditText nameTxt;
    Button button1;
    int count = 0;
    Timer T;

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

        T=new Timer();
        T.scheduleAtFixedRate(new TimerTask() {
            @Override
            public void run() {
                runOnUiThread(new Runnable()
                {
                    @Override
                    public void run()
                    {
                        displayValue.setText("count="+count);
                        count++;
                    }
                });
            }
        }, 0, 1);

        textView1 = (TextView)findViewById(R.id.textView1);
        textView2 = (TextView)findViewById(R.id.textView2);
        textView3 = (TextView)findViewById(R.id.textView3);
        textView4 = (TextView)findViewById(R.id.textView4);
        displayValue = (TextView)findViewById(R.id.displayValue);
        nameTxt = (EditText)findViewById(R.id.nameTxt);
        button1 = (Button)findViewById(R.id.button1);
        button1.setOnClickListener(this);


    }

    @Override
    public void onClick(View v) {
        T.cancel();
        //Open popup or dialog or alert as per your choice and print the count value
        //dialog.editext.setText(""+count);

        final Dialog dialog = new Dialog(MainActivity.this);
        dialog.setContentView(R.layout.custom_popup);
        dialog.setTitle("Typing Result!");

        // set the custom dialog components - text, image and button
        TextView titletext = (TextView) dialog.findViewById(R.id.titletext);
        //titletext.setText("Typing Result!");
        titletext.setVisibility(View.GONE);
        TextView text = (TextView) dialog.findViewById(R.id.text);
        text.setText("Frankie Jones Igat, Your Typing Speed "+String.valueOf(count)+" miliseconds");
        Button dialogButtonOK = (Button) dialog.findViewById(R.id.dialogButtonOK);
        // if button is clicked, close the custom dialog
        dialogButtonOK.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });

        dialog.show();
    }

}

自定义弹出布局文件夹custom_popup.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#999999"
    android:layout_marginTop="10dp">

    <TextView
        android:id="@+id/titletext"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="title"
        android:textSize="18sp"
        android:textColor="@android:color/black"/>

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/titletext"
        android:layout_marginTop="5dp"
        android:textSize="16sp"
        android:text="titlekiefsjisejefsjeaij"
        android:textColor="@android:color/black"
        android:layout_centerHorizontal="true"
        />

    <Button
        android:id="@+id/dialogButtonOK"
        android:layout_width="80dp"
        android:layout_height="40dp"
        android:text=" Ok "
        android:layout_marginTop="10dp"
        android:layout_marginRight="5dp"
        android:layout_below="@+id/text"
        android:textSize="18sp"
        android:textColor="@android:color/black"
        android:layout_centerHorizontal="true"
        android:gravity="center"
        android:background="#FF0000"
        android:layout_marginBottom="10dp"
        />

</RelativeLayout>

如何在Android中获取计时器计数值？

1 个答案: