Android  Fragment的使用 六 适应屏幕大小。我这一次使用DialogFragment做一个自动适应屏幕大小的例子，就是当屏幕不是平板那么大时，通过对话框显示Fragment，当屏幕是平板的时候，插入当前的activity显示。

这个实现主要通过创建几个对应不同大小的bools.xml文件，然后使用getResources().getBoolean(R.bool.large_layout) 来实现判断当前屏幕的大小。

使用例子如下：

public class MainActivity extends Activity

{

@Override

protected void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

public void showLoginDialog(View view)

{

FragmentManager fragmentManager = getFragmentManager();

EditNameDialogFragment newFragment = new EditNameDialogFragment();

boolean mIsLargeLayout = getResources().getBoolean(R.bool.large_layout) ;

Log.e("TAG", mIsLargeLayout + "");

if (mIsLargeLayout )

{

// The device is using a large layout, so show the fragment as a

// dialog

newFragment.show(fragmentManager, "dialog");

} else

{

// The device is smaller, so show the fragment fullscreen

FragmentTransaction transaction = fragmentManager

.beginTransaction();

// For a little polish, specify a transition animation

transaction

.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);

// To make it fullscreen, use the 'content' root view as the

// container

// for the fragment, which is always the root view for the activity

transaction.replace(R.id.id_ly, newFragment)

.commit();

}

}

}

public class EditNameDialogFragment extends DialogFragment

{

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,

Bundle savedInstanceState)

{

if (getResources().getBoolean(R.bool.large_layout))

{

getDialog().requestWindowFeature(Window.FEATURE_NO_TITLE);

}

View view = inflater.inflate(R.layout.fragment_edit_name, container,

false);

return view;

}

}

activity_main

fragment_edit_name

再见