通過活動之間的意圖傳遞變量的問題

Question

我想在兩個活動之間傳遞一個結果，但不知何故它在某些循環或任何在this.startActivity（pIntent）中，然後強制關閉。這是我第一次活動的核心代碼。其計算的東西之後，我想通過雙[] passedResults變量：

public class DisplayMessageActivity extends Activity { 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    List<double[]> lokal = readCsv(getApplicationContext()); 
    ArrayList<String> collect = new ArrayList<String>(); 

    for (double[]sor : lokal) { 

       mean(sor); 
       String row = Double.toString(mean(sor)); 
       collect.add(row);     
    } 

    String result = ""; 
      for (int c=0; c<collect.size(); c++) 
      { 
       String curString = collect.get(c); 
       result = result + curString + "\n"; 
      } 

    String [] results = result.split("\n"); 
    double[] passedResults = new double[results.length]; 
    for(int i = 0; i < results.length; i++) 
    { 
     passedResults[i] = Double.parseDouble(results[i]); 
    } 

    //Passing?! 
    Intent pIntent=new Intent(this,DisplayMessageActivity.class); 
    pIntent.putExtra("sResults", passedResults); 
    this.startActivity(pIntent); 

    getActionBar().setDisplayHomeAsUpEnabled(true); 


    Intent intent = getIntent(); 

     TextView textView = new TextView(this); 
     textView.setTextSize(20); 
     textView.setText("Results are the nexts:\n"+result); 

     setContentView(textView); 
} 

然後我想這種方式趕上它在另一個活動：

public class ScatterGraph extends DisplayMessageActivity{ 

public Intent getIntent(Context context) { 

    Bundle bundle = getIntent().getExtras(); 
    double[] recievedResults = bundle.getDoubleArray("sResults"); 
} 

這裏是logcat的：

10-29 20:49:07.078: E/AndroidRuntime(19821): FATAL EXCEPTION: main 
10-29 20:49:07.078: E/AndroidRuntime(19821): java.lang.IllegalStateException: eglMakeCurrent failed EGL_BAD_ALLOC 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.view.HardwareRenderer$GlRenderer.createSurface(HardwareRenderer.java:1069) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.view.HardwareRenderer$GlRenderer.createEglSurface(HardwareRenderer.java:961) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.view.HardwareRenderer$GlRenderer.initialize(HardwareRenderer.java:787) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1502) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.view.Choreographer.doCallbacks(Choreographer.java:562) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.view.Choreographer.doFrame(Choreographer.java:532) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.os.Handler.handleCallback(Handler.java:725) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.os.Handler.dispatchMessage(Handler.java:92) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.os.Looper.loop(Looper.java:137) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at android.app.ActivityThread.main(ActivityThread.java:5227) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at java.lang.reflect.Method.invokeNative(Native Method) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at java.lang.reflect.Method.invoke(Method.java:511) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562) 
10-29 20:49:07.078: E/AndroidRuntime(19821): at dalvik.system.NativeStart.main(Native Method) 

感謝您的幫助，我真的堅持這一點。我在android開發新手，並在幾個小時後找出解決方案。

Answer 1

您試圖從本身內部啓動DisplayMessageActivity，從而創建一個無限的「循環」。這會讓你的應用程序內存不足。

替換：

Intent pIntent=new Intent(this,DisplayMessageActivity.class); 

有：

Intent pIntent=new Intent(this,ScatterGraph.class); 

二參數Intent(Context, Class<?>)構造應該是要啓動，而不是原始活動Activity類。