java - 以类似于 Doodle Jump 和 Cut the Rope 的方式增加分数

Question

在 Cut the Rope 的关卡清除屏幕中，分数会递增到您在该关卡中获得的分数。我怎么能做这样的事情？我尝试使用 for 循环，一旦我达到该值就停止递增，但这会使我的应用程序崩溃。我想它需要在每个增量上设置 textview 的文本。有什么想法吗？

目前这是我在 Game Over 中显示分数的方式:

// get score and set text field
        scorePreferences = getSharedPreferences("score", 0);
        score = scorePreferences.getInt("score", 0);
        scoreValue.setText(Integer.toString(score));

我希望它增加到首选项中保存的值。我试着这样做:

for (int i = 0; i < score; i++) {
    scoreValue.setText(i);
}

记录猫消息:

01-30 14:11:19.606: E/AndroidRuntime(26279): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.main.francois/com.main.francois.GameOverActivity}: android.content.res.Resources$NotFoundException: String resource ID #0x0
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.app.ActivityThread.access$800(ActivityThread.java:135)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.os.Handler.dispatchMessage(Handler.java:102)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.os.Looper.loop(Looper.java:136)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.app.ActivityThread.main(ActivityThread.java:5017)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at java.lang.reflect.Method.invokeNative(Native Method)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at java.lang.reflect.Method.invoke(Method.java:515)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at dalvik.system.NativeStart.main(Native Method)
01-30 14:11:19.606: E/AndroidRuntime(26279): Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x0
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.content.res.Resources.getText(Resources.java:244)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.widget.TextView.setText(TextView.java:3888)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at com.main.francois.GameOverActivity.incrementScore(GameOverActivity.java:135)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at com.main.francois.GameOverActivity.load(GameOverActivity.java:130)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at com.main.francois.GameOverActivity.onCreate(GameOverActivity.java:78)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.app.Activity.performCreate(Activity.java:5231)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
01-30 14:11:19.606: E/AndroidRuntime(26279):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)

编辑:我写了我的计时器来计算分数，如下所示:

public void scoreTimer() {
        timer.scheduleAtFixedRate(new TimerTask() {
            public void run() {
                if (incrementScore < score) {
                    incrementScore++;
                    scoreValue.setText(String.valueOf(incrementScore));
                }
            }
        }, delay, period);
    }

但我现在得到这个错误:

01-30 14:57:55.006: E/AndroidRuntime(1383): Process: com.main.francois, PID: 1383
01-30 14:57:55.006: E/AndroidRuntime(1383): android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
01-30 14:57:55.006: E/AndroidRuntime(1383):     at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:6094)
01-30 14:57:55.006: E/AndroidRuntime(1383):     at android.view.ViewRootImpl.invalidateChildInParent(ViewRootImpl.java:857)
01-30 14:57:55.006: E/AndroidRuntime(1383):     at android.view.ViewGroup.invalidateChild(ViewGroup.java:4320)
01-30 14:57:55.006: E/AndroidRuntime(1383):     at android.view.View.invalidate(View.java:10935)
01-30 14:57:55.006: E/AndroidRuntime(1383):     at android.view.View.invalidate(View.java:10890)
01-30 14:57:55.006: E/AndroidRuntime(1383):     at android.widget.TextView.checkForRelayout(TextView.java:6587)
01-30 14:57:55.006: E/AndroidRuntime(1383):     at android.widget.TextView.setText(TextView.java:3813)
01-30 14:57:55.006: E/AndroidRuntime(1383):     at android.widget.TextView.setText(TextView.java:3671)
01-30 14:57:55.006: E/AndroidRuntime(1383):     at android.widget.TextView.setText(TextView.java:3646)
01-30 14:57:55.006: E/AndroidRuntime(1383):     at com.main.francois.GameOverActivity$3.run(GameOverActivity.java:145)
01-30 14:57:55.006: E/AndroidRuntime(1383):     at java.util.Timer$TimerImpl.run(Timer.java:284)

我猜我需要使用“异步”或“runonuithread”方法？但我不确定该怎么做？

Answer 1

将分数设置为 String

for (int i = 0; i < score; i++) {
    scoreValue.setText(String.valueOf(i));
}

实际上，当您将一个 int 传递给 setText() 方法时，它会将其作为资源 ID 并尝试在字符串资源(写在 res/string.xml 中)中找出字符串。这就是您遇到 ResourceNotFoundException 的原因:

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.main.francois/com.main.francois.GameOverActivity}:
android.content.res.Resources$NotFoundException: String resource ID #0x0