Android使用TextView和按钮的麻烦

Question

好吧所以我正在制作一个应用程序只是为了在屏幕上弹出一个随机数字的乐趣。如果您点击与随机数相同的数字按钮，您将得到一个点，如果您点击数字不正确的按钮，您将失去一个点。问题是你只有10秒的时间来获得足够的积分（我没有到达我检查用户是否得分足够赢得的部分）。无论如何，我有两个主要问题的应用程序。如果没有应用程序崩溃，计时器将不会显示在屏幕上（我设置了一个try / catch来阻止它崩溃，所以我可以处理其他事情）当你点击正确的按钮时，你的分数不会上升。但是，如果您点按不正确的按钮，分数将会下降。我发现这很奇怪。

感谢您的帮助！

这是我的活动类：

package ab.game.crazynumbers;

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

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class Level1Activity extends Activity {

Random r;
Timer t;
int random;
int time;
boolean running = false;
TextView showingnumber;
TextView score;
TextView timer;
Handler handler;
Button b1;
Button b2;
Button b3;
Button b4;
Button b5;
Button b6;
Button b7;
Button b8;
Button b9;
Button b0;
int playerscore;
TextView finalscore;

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.level_1);

    playerscore = 0;

    showingnumber = (TextView) findViewById(R.id.game_number);
    score = (TextView) findViewById(R.id.game_score);
    timer = (TextView) findViewById(R.id.game_timer2);
    finalscore = (TextView) findViewById(R.id.finalscore);

    running = true;
    time = 10;

    b0 = (Button) findViewById(R.id.b1_0);
    b1 = (Button) findViewById(R.id.b1_1);
    b2 = (Button) findViewById(R.id.b1_2);
    b3 = (Button) findViewById(R.id.b1_3);
    b4 = (Button) findViewById(R.id.b1_4);
    b5 = (Button) findViewById(R.id.b1_5);
    b6 = (Button) findViewById(R.id.b1_6);
    b7 = (Button) findViewById(R.id.b1_7);
    b8 = (Button) findViewById(R.id.b1_8);
    b9 = (Button) findViewById(R.id.b1_9);

    randomnumber();

    b1.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent e) {

            if (e.getAction() == android.view.MotionEvent.ACTION_UP) {

                if (1 == random) {
                    playerscore++;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }

                if (1 != random) {
                    playerscore--;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }
            }

            return false;

        }
    });

    b2.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent e) {

            if (e.getAction() == android.view.MotionEvent.ACTION_UP) {

                if (2 == random) {
                    playerscore++;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }

                if (2 != random) {
                    playerscore--;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }
            }

            return false;
        }
    });

    b3.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent e) {

            if (e.getAction() == android.view.MotionEvent.ACTION_UP) {

                if (3 == random) {
                    playerscore++;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }

                if (3 != random) {
                    playerscore--;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }
            }

            return false;
        }
    });

    b4.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent e) {

            if (e.getAction() == android.view.MotionEvent.ACTION_UP) {

                if (4 == random) {
                    playerscore++;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }

                if (4 != random) {
                    playerscore--;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }
            }

            return false;
        }
    });

    b5.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent e) {

            if (e.getAction() == android.view.MotionEvent.ACTION_UP) {

                if (5 == random) {
                    playerscore++;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }

                if (5 != random) {
                    playerscore--;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }
            }

            return false;
        }
    });

    b6.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent e) {

            if (e.getAction() == android.view.MotionEvent.ACTION_UP) {

                if (6 == random) {
                    playerscore++;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }

                if (6 != random) {
                    playerscore--;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }
            }

            return false;
        }
    });

    b7.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent e) {

            if (e.getAction() == android.view.MotionEvent.ACTION_UP) {

                if (7 == random) {
                    playerscore++;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }

                if (7 != random) {
                    playerscore--;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }
            }

            return false;
        }
    });

    b8.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent e) {

            if (e.getAction() == android.view.MotionEvent.ACTION_UP) {

                if (8 == random) {
                    playerscore++;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }

                if (8 != random) {
                    playerscore--;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }
            }

            return false;
        }
    });

    b9.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent e) {

            if (e.getAction() == android.view.MotionEvent.ACTION_UP) {

                if (9 == random) {
                    playerscore++;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }

                if (9 != random) {
                    playerscore--;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }
            }

            return false;
        }
    });

    b0.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent e) {

            if (e.getAction() == android.view.MotionEvent.ACTION_UP) {

                if (0 == random) {
                    playerscore++;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }

                if (0 != random) {
                    playerscore--;
                    runOnUiThread(new Runnable() {
                        public void run() {
                            score.setText("Your Score Is " + playerscore);
                        }
                    });
                    randomnumber();
                }
            }

            return false;
        }
    });

    startTimer();

}

public void startTimer() {

    Timer t = new Timer("Game Timer");

    handler = new Handler();

    t.scheduleAtFixedRate(new TimerTask() {

        @Override
        public void run() {

            if (time > 0) {

                time -= 1;

                runOnUiThread(new Runnable() {
                    public void run() {
                        try {
                            timer.setText("Seconds Remaining: "+ time);
                        } catch (Exception e) {
                        }
                    }
                });

            }

            if (time <= 0) {
                this.cancel();
                  finish();
            }

        }

    },

    // time before start of timer
            0,

            // time before it runs again
            1000);

}

public void randomnumber() {

    r = new Random();
    random = r.nextInt(10);

    runOnUiThread(new Runnable() {
        public void run() {
            showingnumber.setText(String.valueOf(random));
        }
    });

}

}

这是我的XML：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
    android:id="@+id/game_timer"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:text="Seconds Remaining: 0.0"
    android:textAppearance="?android:attr/textAppearanceLarge" />

<TextView
android:id="@+id/game_score"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:gravity="center"
android:text="Your Score Is 0"
android:textAppearance="?android:attr/textAppearanceLarge" />

<Button
    android:id="@+id/b1.4"
    android:layout_width="80dp"
    android:layout_height="50dp"
    android:layout_alignLeft="@+id/b1.1"
    android:layout_alignTop="@+id/b1.1"
    android:layout_marginTop="73dp"
    android:text="4" />

<TextView
    android:id="@+id/game_number"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/game_timer"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="89dp"
    android:gravity="center"
    android:text="0"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<Button
    android:id="@+id/b1.1"
    android:layout_width="80dp"
    android:layout_height="50dp"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/game_number"
    android:layout_marginLeft="14dp"
    android:layout_marginTop="130dp"
    android:text="1" />

<Button
    android:id="@+id/b1.7"
    android:layout_width="80dp"
    android:layout_height="50dp"
    android:layout_above="@+id/game_score"
    android:layout_alignLeft="@+id/b1.4"
    android:layout_marginBottom="15dp"
    android:text="7" />

<Button
    android:id="@+id/b1.2"
    android:layout_width="80dp"
    android:layout_height="50dp"
    android:layout_alignBaseline="@+id/b1.1"
    android:layout_alignBottom="@+id/b1.1"
    android:layout_centerHorizontal="true"
    android:text="2" />

<Button
    android:id="@+id/b1.5"
    android:layout_width="80dp"
    android:layout_height="50dp"
    android:layout_alignBaseline="@+id/b1.4"
    android:layout_alignBottom="@+id/b1.4"
    android:layout_centerHorizontal="true"
    android:text="5" />

<Button
    android:id="@+id/b1.8"
    android:layout_width="80dp"
    android:layout_height="50dp"
    android:layout_alignBaseline="@+id/b1.7"
    android:layout_alignBottom="@+id/b1.7"
    android:layout_centerHorizontal="true"
    android:text="8" />

<Button
    android:id="@+id/b1.0"
    android:layout_width="80dp"
    android:layout_height="50dp"
    android:layout_above="@+id/b1.2"
    android:layout_alignLeft="@+id/b1.2"
    android:layout_marginBottom="18dp"
    android:text="0" />

<Button
    android:id="@+id/b1.6"
    android:layout_width="80dp"
    android:layout_height="50dp"
    android:layout_alignBaseline="@+id/b1.4"
    android:layout_alignBottom="@+id/b1.4"
    android:layout_alignParentRight="true"
    android:layout_marginRight="20dp"
    android:text="6" />

<Button
    android:id="@+id/b1.9"
    android:layout_width="80dp"
    android:layout_height="50dp"
    android:layout_alignBaseline="@+id/b1.7"
    android:layout_alignBottom="@+id/b1.7"
    android:layout_alignLeft="@+id/b1.6"
    android:text="9" />

<Button
    android:id="@+id/b1.3"
    android:layout_width="80dp"
    android:layout_height="50dp"
    android:layout_alignBaseline="@+id/b1.1"
    android:layout_alignBottom="@+id/b1.1"
    android:layout_alignLeft="@+id/b1.6"
    android:text="3" />

</RelativeLayout>

Answer 1

您的布局显示 game_timer ，您的代码显示 game_timer2 。

检查一下。 你的台词是：

timer = (TextView) findViewById(R.id.game_timer2);
finalscore = (TextView) findViewById(R.id.finalscore);

game_timer2和finalscore您的布局上不存在。

您应该使用处理程序来编辑GUI。例如。 在你的课堂上添加这个

 static final int SCORE_UP = 1;     static final int SCORE_DOWN = 2;

     final Handler mhandler = new Handler() { 
                  int playerscore = 0;
          @Override
          public void handleMessage(Message msg) {
              switch(msg.what ){
              case SCORE_UP:
              {
                  playerscore++;
              }
                  break;
              case SCORE_DOWN:
              {
                  playerscore--;
              }
                  break;
                  default:

              }
              score.setText("Your Score Is " + playerscore);
             }
   };

在积极使用的地方

runOnUiThread(new Runnable() {
   public void run() {
     mhandler.sendMessage(Message.obtain(mhandler, SCORE_UP));
     //score.setText("Your Score Is " + playerscore);
   }
});