TabHost实现多个Activity界面间切换
1、主Activity继承至TabActivity
public class MainActivity extends TabActivity {
private TabHost tabHost;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
tabHost = getTabHost();
addTab("act1", "界面1", MyActivity1.class);
addTab("act2", "界面2", MyActivity2.class);
addTab("act3", "界面3", MyActivity3.class);
setContentView(tabHost);
}
/**
* 添加Activity标签
* @param tag标识
* @param title标签标题
* @param clazz 激活的界面
*/
private void addTab(String tag, String title, Class clazz) {
TabSpec tabSpec = tabHost.newTabSpec(tag);
tabSpec.setIndicator(title);
Intent intent = new Intent(getApplicationContext(),clazz);
tabSpec.setContent(intent);
tabHost.addTab(tabSpec);
}
@Override
protected void onStop() {
super.onStop();
}
}
待切换的界面1：
public class MyActivity1 extends Activity {
private static final String TAG = "MyActivity1";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i(TAG,"MyActivity1 创建了...");
TextView tv = new TextView(this);
tv.setText("我是界面1");
tv.setGravity(Gravity.CENTER);
tv.setTextSize(100);
setContentView(tv);
}
@Override
protected void onStop() {
Log.i(TAG,"MyActivity1 onStop");
super.onStop();
}
@Override
protected void onPause() {
Log.i(TAG,"MyActivity1 onPause");
super.onPause();
}
@Override
protected void onResume() {
Log.i(TAG,"MyActivity1 onResume");
super.onResume();
}
@Override
protected void onDestroy() {
Log.i(TAG,"MyActivity1 onDestroy");
super.onDestroy();
}
}
待切换的界面2：
public class MyActivity2 extends Activity {
private static final String TAG = "MyActivity2";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i(TAG,"MyActivity2 创建了...");
TextView tv = new TextView(this);
tv.setText("我是界面2");
tv.setGravity(Gravity.CENTER);
tv.setTextSize(100);
setContentView(tv);
}
@Override
protected void onStop() {
Log.i(TAG,"MyActivity2 onStop");
super.onStop();
}
@Override
protected void onPause() {
Log.i(TAG,"MyActivity2 onPause");
super.onPause();
}
@Override
protected void onResume() {
Log.i(TAG,"MyActivity2 onResume");
super.onResume();
}
}
待切换的界面3：
public class MyActivity3 extends Activity {
private static final String TAG = "MyActivity3";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i(TAG,"MyActivity3 创建了...");
TextView tv = new TextView(this);
tv.setText("我是界面3");
tv.setGravity(Gravity.CENTER);
tv.setTextSize(100);
setContentView(tv);
}
@Override
protected void onStop() {
Log.i(TAG,"MyActivity3 onStop");
super.onStop();
}
@Override
protected void onPause() {
Log.i(TAG,"MyActivity3 onPause");
super.onPause();
}
@Override
protected void onResume() {
Log.i(TAG,"MyActivity3 onResume");
super.onResume();
}
}
经测试，在切换的过程中，作为content的三个activity的生命周期方法，onStop()、onDestory()不会执行!
经查：getLocalActivityManager.dispath...可以分发各方法。从而激活对应activity的生命周期方法。（未测）
