如何使它从垂直视图变为水平视图

Question

当我激活开始时间时，我希望看到在我从移动横向从垂直更改为水平以及从水平更改为垂直期间增加的数字。

障碍物：
当显示的数字增加值时，我想将移动景观从垂直视图更改为水平视图。当我这样做时，数字从头开始。

今天，我是 android 的新手，下面的源代码无法实现。

我漏掉了什么部分？

--------------------------
class StopwatchActivity





package com.jfdimarzio.stopwatch4;

import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class StopwatchActivity extends AppCompatActivity {

    private int seconds = 0;
    private boolean running;
    private boolean wasRunning;

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

        if(savedInstanceState != null)
        {
            seconds = savedInstanceState.getInt("Seconds");
            running = savedInstanceState.getBoolean("running");
            wasRunning = savedInstanceState.getBoolean("wasRunning");
        }

        runTimer();
    }

    @Override
    public void onSaveInstanceState(Bundle savedInstanceState)
    {
        savedInstanceState.putInt("seconds", seconds);
        savedInstanceState.putBoolean("running", running);
        savedInstanceState.putBoolean("wasRunning", wasRunning);
    }

    @Override
    protected void onStop()
    {
        super.onStop();
        wasRunning = running;
        running = false;
    }

    @Override
    protected void onStart()
    {
        super.onStart();
        if(wasRunning)
        {
            running = true;
        }
    }


    @Override
    protected void onPause()
    {
        super.onPause();
        wasRunning = running;
        running = false;
    }


    @Override
    protected void onResume()
    {
        super.onResume();
        if (wasRunning) {
            running = true;
        }
    }



    public void onClickStart(View view)
    {
        running = true;
    }

    public void onClickStop(View view)
    {
        running = false;
    }

    public void onClickReset(View view)
    {
        running = false;
        seconds= 0;
    }


    private void runTimer()
    {
        final TextView timeView = (TextView)findViewById(R.id.time_view);
        final Handler handler = new Handler();
        handler.post(new Runnable()
        {
            @Override
            public void run()
            {
                int hours = seconds/3600;
                int minutes = (seconds%3600)/60;
                int secs = seconds%60;
                String time = String.format("%d:%02d:%02d", hours, minutes, secs);
                timeView.setText(time);

                if(running)
                {
                    seconds++;
                }

                handler.postDelayed(this, 1000);
            }

        });

    }



}



------------------------------
activity_stopwatch.xml




<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_stopwatch"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.jfdimarzio.stopwatch4.StopwatchActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        android:id="@+id/textView" />

    <TextView
        android:id="@+id/time_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="0dp"
        android:text=""
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:textSize="92sp" />

    <Button
        android:id="@+id/start_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/time_view"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="20dp"
        android:onClick="onClickStart"
        android:text="@string/start" />

    <Button
        android:id="@+id/stop_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/start_button"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="10dp"
        android:onClick="onClickStop"
        android:text="@string/stop" />

    <Button
        android:id="@+id/reset_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/stop_button"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="10dp"
        android:onClick="onClickReset"
        android:text="@string/reset" />


</RelativeLayout>




------------------------------
strings.xml




<resources>
    <string name="app_name">Stopwatch4</string>
    <string name="start">Start</string>
    <string name="stop">Stop</string>
    <string name="reset">Reset</string>
</resources>

Answer 1

您使用 savedInstanceState.putInt("sseconds") 但 savedInstanceState.getInt("Sseconds") ; 在 onCreate() 中将 "Seconds" 更改为 "seconds"。

希望对您有所帮助，我是 Whosebug 的新手。

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

    if(savedInstanceState != null)
    {
        seconds = savedInstanceState.getInt("seconds");
        running = savedInstanceState.getBoolean("running");
        wasRunning = savedInstanceState.getBoolean("wasRunning");
    }

    runTimer();
}

如何使它从垂直视图变为水平视图

How to make it from vertical to horizontal view

android

android-7.1-nougat