我制作了一个单一的秒表，但是我找不到在同一页面上添加几个秒表的方法。什么是有效的方法呢？我尝试复制代码并更改所有参数，但这似乎不起作用。
我现在的代码：
XML
<RelativeLayout
android:layout_width="368dp"
android:layout_height="495dp"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp">
<EditText
android:id="@+id/topTextInput"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="50dp"
android:layout_toLeftOf="@+id/timeOne"
android:layout_toStartOf="@+id/timeOne"
android:width="300dp"
android:elevation="1dp" />
<TextView
android:id="@+id/timeOne"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/topTextInput"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginEnd="13dp"
android:layout_marginRight="13dp"
android:layout_marginTop="50dp"
android:clickable="false"
android:elevation="4dp"
android:text="00:00:00"
android:textSize="24sp"
android:visibility="visible" />
<Button
android:id="@+id/stopbuttonOne"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/topTextInput"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/topTextInput"
android:layout_toEndOf="@+id/topTextInput"
android:layout_toRightOf="@+id/topTextInput"
android:width="110dp"
android:background="@android:color/darker_gray"
android:onClick="stopClick"
android:text=""
android:visibility="invisible" />
<Button
android:id="@+id/startbuttonOne"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/topTextInput"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/topTextInput"
android:layout_toEndOf="@+id/topTextInput"
android:layout_toRightOf="@+id/topTextInput"
android:width="120dp"
android:onClick="startClick"
android:text=""
android:visibility="visible" />
<Button
android:id="@+id/resetButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="Reset"
android:onClick="resetClick" />
<TextView
android:id="@+id/millitimeOne"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/timeOne"
android:visibility="visible" />
</RelativeLayout>
Java ：
package com.keur.joran.time;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity
{
private TextView tempTextView; //Temporary TextView
private Button tempBtn; //Temporary Button
private Handler mHandler = new Handler();
private Handler m2Handler = new Handler();
private long startTime;
private long elapsedTime;
private long start2Time;
private long elapsed2Time;
private final int REFRESH_RATE = 100;
private String hours,minutes,seconds,milliseconds;
private long secs,mins,hrs,msecs;
private boolean stopped = false;
private Runnable startTimer = new Runnable() { public void run() { elapsedTime = System.currentTimeMillis() - startTime; updateTimer(elapsedTime); mHandler.postDelayed(this,REFRESH_RATE); } };
private Runnable start2Timer = new Runnable() { public void run() { elapsed2Time = System.currentTimeMillis() - start2Time; updateTimer(elapsed2Time); mHandler.postDelayed(this,REFRESH_RATE); } };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void stopClick (View view){ hideStopButton(); mHandler.removeCallbacks(startTimer); stopped = true; }
public void startClick (View view){ showStopButton(); if(stopped){ startTime = System.currentTimeMillis() - elapsedTime; } else{ startTime = System.currentTimeMillis(); } mHandler.removeCallbacks(startTimer); mHandler.postDelayed(startTimer, 0); }
public void resetClick (View view){ stopped = false; ((TextView)findViewById(R.id.timeOne)).setText("00:00:00"); ((TextView)findViewById(R.id.millitimeOne)).setText(".0"); }
private void showStopButton(){ ((Button)findViewById(R.id.startbuttonOne)).setVisibility(View.GONE);
((Button)findViewById(R.id.stopbuttonOne)).setVisibility(View.VISIBLE);
}
private void hideStopButton(){ ((Button)findViewById(R.id.startbuttonOne)).setVisibility(View.VISIBLE);
((Button)findViewById(R.id.stopbuttonOne)).setVisibility(View.GONE);
}
private void updateTimer (float time){ secs = (long)(time/1000);
mins = (long)((time/1000)/60); hrs = (long)(((time/1000)/60)/60);
/* Convert the seconds to String * and format to ensure it has * a leading zero when required */
secs = secs % 60;seconds=String.valueOf(secs);
if(secs == 0){ seconds = "00"; } if(secs <10 && secs > 0){ seconds = "0"+seconds;
}
/* Convert the minutes to String and format the String */ mins = mins % 60; minutes=String.valueOf(mins); if(mins == 0){ minutes = "00"; } if(mins <10 && mins > 0){ minutes = "0"+minutes; } /* Convert the hours to String and format the String */ hours=String.valueOf(hrs); if(hrs == 0){ hours = "00"; } if(hrs <10 && hrs > 0){ hours = "0"+hours; } /* Although we are not using milliseconds on the timer in this example * I included the code in the event that you wanted to include it on your own */ milliseconds = String.valueOf((long)time); if(milliseconds.length()==2){ milliseconds = "0"+milliseconds; } if(milliseconds.length()<=1){ milliseconds = "00"; } milliseconds = milliseconds.substring(milliseconds.length()-3, milliseconds.length()-2); /* Setting the timer text to the elapsed time */ ((TextView)findViewById(R.id.timeOne)).setText(hours + ":" + minutes + ":" + seconds); ((TextView)findViewById(R.id.millitimeOne)).setText("." + milliseconds); }
}
答案 0 :(得分：0)
将秒表转换为自定义视图或片段。然后你应该只需要在xml中包含view / fragment，并调用你在java代码中添加的相应的事件处理函数。