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）