Activity开始后Oncreat方法只能调用一次

Question

为什么？如题。为什么Activity开始后OnCreat方法只能调用一次？

能不能在一个Activity中多次调用OnCreat()方法？

如果能实现，请给一些示例代码。谢谢

Answer 1

同问，我也不明白LZ这样做有什么意义，不过是可以通过Fragment实现的

Samplecode:

public class MainActivity extends Activity implements OnClickListener {
        private Button btPost;
        private Bundle state;
        private int counter = 0;

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            state = savedInstanceState;
            btPost = (Button) findViewById(R.id.btPost);
            btPost.setOnClickListener(this);
            Toast.makeText(getBaseContext(), " " + counter, Toast.LENGTH_LONG)
                    .show();
        }

        @Override
        public void onClick(View v) {
            counter++;
            this.onCreate(state);
        }
    }