如何拆分字符串並將其保存到數組

-2

我有一串溼度測量，沒有空格，所以當我在Android應用程序上顯示結果時，我得到這個：36.5036.5036.5036.2036.2036.2036.2036.10。現在我想繪製溼度圖，所以我需要拆分數字並將其保存到數組中。我需要這樣的：如何拆分字符串並將其保存到數組

double[] temp= {36.50, 36.50, 36.50, 36.20, 36.20, 36.20, 36.10};

這是我嘗試過，但它不工作（應用程序崩潰）：

String parts[] = response.split("(?<=\\G.{5})"); 
double[] partsD = new double[parts.length]; 
for(int i = 0; i < parts.length; i++) 
{ 
    partsD[i] = Double.parseDouble(parts[i]); 
}

我敢肯定，這個問題是在代碼的一部分，因爲我試圖將它排除在外，並創建了具有想象溫度的陣列，並且繪製得很好。

這裏是日誌貓：

12-02 12:08:52.484: E/AndroidRuntime(27004): FATAL EXCEPTION: main 
12-02 12:08:52.484: E/AndroidRuntime(27004): java.lang.RuntimeException: Unable to start activity  ComponentInfo{com.Graph/com.Graph.second}: java.lang.NumberFormatException: Invalid double:  "36.5036.5036.5036.2036.2036.2036.2036.1036.1036.1036.1036.1036.1036.1036.1036.1036.1036.1036.1036.10 " 
12-02 12:08:52.484: E/AndroidRuntime(27004): at  android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2307) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at  android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2357) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at android.app.ActivityThread.access$600(ActivityThread.java:153) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at android.os.Handler.dispatchMessage(Handler.java:99) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at android.os.Looper.loop(Looper.java:137) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at android.app.ActivityThread.main(ActivityThread.java:5226) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at java.lang.reflect.Method.invokeNative(Native Method) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at java.lang.reflect.Method.invoke(Method.java:511) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:112) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at dalvik.system.NativeStart.main(Native Method) 
12-02 12:08:52.484: E/AndroidRuntime(27004): Caused by: java.lang.NumberFormatException: Invalid double:  "36.5036.5036.5036.2036.2036.2036.2036.1036.1036.1036.1036.1036.1036.1036.1036.1036.1036.1036.1036.10" 
12-02 12:08:52.484: E/AndroidRuntime(27004): at java.lang.StringToReal.invalidReal(StringToReal.java:63) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at java.lang.StringToReal.parseDouble(StringToReal.java:269) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at java.lang.Double.parseDouble(Double.java:295) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at com.Graph.second.onCreate(second.java:49) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at android.app.Activity.performCreate(Activity.java:5104) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
12-02 12:08:52.484: E/AndroidRuntime(27004): at  android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2261) 
12-02 12:08:52.484: E/AndroidRuntime(27004): ... 12 more

感謝您的寶貴時間。

來源

2014-12-02 sinkoviak

http://stackoverflow.com/a/3481842/4116091 – 2014-12-02 11:13:37

剛使用'response.split（「。」）;'。 – greenapps 2014-12-02 11:18:24

如果'response.equals（「36.5036.5036.5036.2036.2036.2036.2036.2036.10」）'，你的正則表達式是錯誤的，所以'response'不是分割和'parts == {response}' – jhamon 2014-12-02 11:18:42

此代碼將查找由2個由2個點分隔的數字組成的模式。每個匹配都被轉換爲一個double並添加到一個數組中。

Pattern pattern= Pattern.compile("\\d{2}.\\d{2}"); 
Matcher matcher = pattern.matcher(response); 
if(matcher.matches(){ 
    double[] partsD = new double[parts.length]; 
    for(int i = 1; i < matcher.groupCount(); i++){ 
     partsD[i] = Double.parseDouble(matcher.group(i)); 
    } 
}

你是接近於解決辦法，但你沒有拆分response字符串作爲它的異常堆棧的陳述的：

12-02 12:08:52.484: E/AndroidRuntime(27004): Caused by: java.lang.NumberFormatException: Invalid double:  "36.5036.5036.5036.2036.2036.2036.2036.1036.1036.1036.1036.1036.1036.1036.1036.1036.1036.1036.1036.10"

來源

2014-12-02 11:25:17 jhamon

謝謝jhamon。 – sinkoviak 2014-12-02 11:32:07

如何拆分字符串並將其保存到數組

回答

相關問題