MainActivity
public class MainActivity extends Activity { private Button button; private MyApp myApp; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button)this.findViewById(R.id.button); myApp = (MyApp)getApplication(); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub myApp.setName("thomas"); Intent intent = new Intent(MainActivity.this, OtherActivity.class); startActivity(intent); } }); } }MyApp 需要继承Application
public class MyApp extends Application { public String name; public String getName() { return name; } public void setName(String string) { this.name = string; } @Override public void onCreate() { // TODO Auto-generated method stub super.onCreate(); setName("张三"); } }OtherActivity
public class OtherActivity extends Activity { private MyApp myApp; private TextView textView; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.other); textView = (TextView)this.findViewById(R.id.msg); myApp = (MyApp)getApplication(); textView.setText("OtherActivity getName " + myApp.getName()); } }试验效果
