public class MainActivity extends AppCompatActivity {
@SuppressWarnings("deprecation")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//1 获取手机的分辨率
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
int width = wm.getDefaultDisplay().getWidth();
int height = wm.getDefaultDisplay().getHeight();
//2 判断横竖屏
//3 获取Fragment的管理者 通过上下文直接获取
// FragmentManager fragmentManager = getFragmentManager();
FragmentManager supportFragmentManager = getSupportFragmentManager();
FragmentTransaction beginTransaction = supportFragmentManager.beginTransaction(); // 开启事务
if (height > width) {
// 说明是竖屏 加载第一个Fragment android.R.id.content // 代表当前手机的窗体
beginTransaction.replace(android.R.id.content, new Fragment1());
} else {
// 说明是横屏 加载第二个Fragment
beginTransaction.replace(android.R.id.content, new Fragment2());
}
//4 最后一步 记得commit
beginTransaction.commit();
}
}
