android.app.Fragment 和 android.support.v4.app.Fragment 之间的区别

android.app.Fragment 和 android.support.v4.app.Fragment 的区别

java
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // 创建一个新的Fragment
        MyFragment myFragment = new MyFragment();
        // 获取FragmentManager
        FragmentManager fragmentManager = getSupportFragmentManager();
        // 开始一个Fragment事务
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        // 替换布局中的占位符为新的Fragment
        fragmentTransaction.replace(R.id.fragment_container, myFragment);
        // 提交事务
        fragmentTransaction.commit();
    }
}