Android全局变量

public class MyApp extends Application {              private String myState;              public String getState(){          return myState;        }        public void setState(String s){          myState = s;        }      }        public class Blah extends Activity {              @Override        public void onCreate(Bundle b){          ...          MyApp appState = ((MyApp)getApplicationContext());          String state = appState.getState();          ...        }      }

然后再manifest中添加应用：

    <application android:name=".MyApp" android:icon="@drawable/icon" android:label="@string/app_name">              <activity android:name=".ClickableListItemActivity"                        android:label="@string/app_name">                  <intent-filter>                      <action android:name="android.intent.action.MAIN" />                      <category android:name="android.intent.category.LAUNCHER" />                  </intent-filter>              </activity>                </application>

说明：

需添加的内容：android:name=".your_App_Name"

位置:当前activity所在的位置

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