• 复用

使用

• 创建继承Fragment的类

• 重写onCreateView方法

• 绑定xml

  View view = inflater.inflate(R.layout.fragment_title,null);return view;

  静态使用

• 在xml中使用

  <fragment      android:id="@+id/main_fragment"      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:name="wang.ismy.fragment.TitleFragment"    />

动态使用

• 老版本

  button.setOnClickListener(new View.OnClickListener() {          @Override          public void onClick(View view) {              FragmentManager manager = getFragmentManager();              FragmentTransaction transaction = manager.beginTransaction();              transaction.add(R.id.title_layout,new TitleFragment());              transaction.commit();          }      });

• 新版本

getSupportFragmentManager()                        .beginTransaction()                        .add(R.id.title_layout,new TitleFragment())                        .commit();

V4包

动态切换

Random random = new Random();                if (random.nextBoolean()){                    getSupportFragmentManager()                            .beginTransaction()                            .replace(R.id.title_layout,new TitleFragment())                            .commit();                }else{                    getSupportFragmentManager()                            .beginTransaction()                            .replace(R.id.title_layout,new ContentFragment())                            .commit();                }

生命周期

通信

Activity 向 Fragment传值

// Activity 端TitleFragment titleFragment  = new TitleFragment();                    Bundle bundle = new Bundle();                    bundle.putString("id", UUID.randomUUID().toString());                    titleFragment.setArguments(bundle);                    getSupportFragmentManager()                            .beginTransaction()                            .replace(R.id.title_layout,titleFragment)                            .commit();

// Fragment端if (getArguments() != null){            textView.setText(getArguments().getString("id"));        }

Fragment 向 Activity 传值

• 回调接口

linearLayout.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                if (listener != null){                    listener.onClick();                }            }        });/////////////// public interface TitleFragmentClickListener{        void onClick();    }    public void setListener(TitleFragmentClickListener listener) {        this.listener = listener;    }

titleFragment.setListener(new TitleFragment.TitleFragmentClickListener() {                        @Override                        public void onClick() {                            Toast.makeText(getApplicationContext(),"click 111",Toast.LENGTH_SHORT).show();                        }                    });

Fragment 向 Fragment 传值

getFragmentManager().findFragmentById()

ListFragment