Android Fragment外延

Fragment扩展

LiftFragment

LiftFragment

用法 ： 自定义类继承Fragment 重写oncreate方法，调用selelistAdapter（）为list控件赋值 重写onlistItemclick（）实现listview的点击事件

listFragment 代码

// An highlighted block public class Fragment1 extends ListFragment { String[] str={"北京","上海","广州","天津"}; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return super.onCreateView(inflater, container, savedInstanceState); } @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setListAdapter(new ArrayAdapter<String>(getActivity(),R.layout.support_simple_spinner_dropdown_item,str)); } @Override public void onListItemClick(ListView l, View v, int position, long id) { super.onListItemClick(l, v, position, id); EventBus.getDefault().postSticky(str[position]); } }

适配器

// An highlighted block public class MyDalog extends DialogFragment { @Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { return inflater.inflate(R.layout.view3,container,false); } }

DialogFragment 底层继承Fragment 自带Dialog

用法： 自定义类继承DialogFragment 重写Oncreate方法将自定义布局天冲给Fragment 在主类白这个方法new出来 对象.show（getSupportFragmentManager（）,字符串） 要设置在点击事件中

主类代码

// An highlighted block public class MainActivity extends AppCompatActivity { Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button=findViewById(R.id.main_button); final FragmentManager manager=getSupportFragmentManager(); FragmentTransaction transaction=manager.beginTransaction(); Fragment1 fragment1 = new Fragment1(); transaction.add(R.id.main_rela1,fragment1); Fragment2 fragment2 = new Fragment2(); transaction.add(R.id.main_rela2,fragment2); transaction.commit(); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { MyDalog myDalog = new MyDalog(); myDalog.show(getSupportFragmentManager(),"dsds"); } });

pargerAdapter 作用：可以添加出Fragment以外的空间 重写四个方法 getcount istraomtiateItem destroyItem isviewFragmentObject

pagerTablayout：不可点 PagerTitlestrip ：可点 用法： 把他们嵌套在Viewpager的标签内

getPagerTitle 这个方法是使用tablayout的时候使用