Android从另一个活动获取Int

我试图实现的是，当我点击一个图像按钮时，它会将1添加到一个整数，然后当我进入统计页面时，它会在文本视图中显示这个整数，但是当我点击统计按钮时，我的应用程序崩溃了

颜色类别

统计类

首先放入日志以检查值是否传入意图。 如果成功： 然后使用此代码获取值

theblue.setText(""+getIntent().getExtras().getInt("blue1"));

---

它是如何崩溃的？请提供一个日志。你说的是什么按钮？请具体说明并向我们显示logcat，我们无法读取您的全部代码，在您声明bl1=0时无法对其进行初始化。或者检查您是否已将所有活动声明到清单中？启动MainActivity或Stats？tb1是什么，在何处初始化？

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

    theblue = (TextView)findViewById(R.id.textView1);
    theblue.setText(getIntent().getExtras().getInt("blue1"));


}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.stats, menu);
    return true;
}

}

04-18 05:30:12.645: W/dalvikvm(790): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
04-18 05:30:12.685: E/AndroidRuntime(790): FATAL EXCEPTION: main
04-18 05:30:12.685: E/AndroidRuntime(790): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.childapp/com.example.childapp.Stats}: java.lang.NullPointerException
04-18 05:30:12.685: E/AndroidRuntime(790):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
04-18 05:30:12.685: E/AndroidRuntime(790):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
04-18 05:30:12.685: E/AndroidRuntime(790):  at android.app.ActivityThread.access$600(ActivityThread.java:141)
04-18 05:30:12.685: E/AndroidRuntime(790):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
04-18 05:30:12.685: E/AndroidRuntime(790):  at android.os.Handler.dispatchMessage(Handler.java:99)
04-18 05:30:12.685: E/AndroidRuntime(790):  at android.os.Looper.loop(Looper.java:137)
04-18 05:30:12.685: E/AndroidRuntime(790):  at android.app.ActivityThread.main(ActivityThread.java:5041)
04-18 05:30:12.685: E/AndroidRuntime(790):  at java.lang.reflect.Method.invokeNative(Native Method)
04-18 05:30:12.685: E/AndroidRuntime(790):  at java.lang.reflect.Method.invoke(Method.java:511)
04-18 05:30:12.685: E/AndroidRuntime(790):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
04-18 05:30:12.685: E/AndroidRuntime(790):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
04-18 05:30:12.685: E/AndroidRuntime(790):  at dalvik.system.NativeStart.main(Native Method)
04-18 05:30:12.685: E/AndroidRuntime(790): Caused by: java.lang.NullPointerException
04-18 05:30:12.685: E/AndroidRuntime(790):  at com.example.childapp.Stats.onCreate(Stats.java:19)
04-18 05:30:12.685: E/AndroidRuntime(790):  at android.app.Activity.performCreate(Activity.java:5104)
04-18 05:30:12.685: E/AndroidRuntime(790):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
04-18 05:30:12.685: E/AndroidRuntime(790):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
04-18 05:30:12.685: E/AndroidRuntime(790):  ... 11 more

theblue.setText(""+getIntent().getExtras().getInt("blue1"));