Intent intent = new Intent();
intent.setClass(A.this, B.class);
Bundle bundle = new Bundle();
bundle.putString("name", "xiaozhu");
intent.putExtras(bundle);
startActivity(intent);

Intent intent = this.getIntent();
Bundle bundle = intent.getExtras();
String name = bundle.getString("name");
[java] view plaincopy
Intent intent = this.getIntent();
Bundle bundle = intent.getExtras();
String name = bundle.getString("name");

class MyApp extends Application {
private String myState;
public String getState() {
return myState;
}
public void setState(String s) {
myState = s;
}
}

<application android:name=".MyApp" android:icon="@drawable/icon" android:label="@string/app_name">

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