Android Fragmentation

Myth丶恋晨 2022-05-30 12:38 150阅读 0赞

学习Fragment途中知道了开源库Fragmentation，本文用于介绍相关的使用方法和注意点。

# Fragmentation #

版本：2018/3/12-1

*  Fragmentation
    
     *  滑动退出Fragment：SwipeBackFragment
        
         *  使用步骤
            
             *  1、SwipeBackFragment集成
         *  2、Fragment需要继承自SwipeBackFragment
            
             *  3、Activity继承SwipeBackActivity
             *  4、使用自定义style防止出现滑动的黑色页面
         *  SwipeBackFragment更多方法
     *  Fragmentation开源库

## 滑动退出Fragment：SwipeBackFragment ##

*  [github-SwipeBackFragment][]
 *  [SwipeBackFragment原作者的教程][SwipeBackFragment]

### 使用步骤 ###

#### 1、SwipeBackFragment集成 ####

*  可以通过依赖集成
 *  也可以直接将项目中的代码添加到自己工程中

### 2、Fragment需要继承自SwipeBackFragment ###

public class BlankFragment extends SwipeBackFragment { 
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            View view = inflater.inflate(R.layout.fragment_blank, container, false);
            //【注意！】一定要添加该内容
            return attachToSwipeBack(view);
        }
        ...
    }

#### 3、Activity继承SwipeBackActivity ####

public class MainActivity extends SwipeBackActivity{ 
      /** * 限制SwipeBack的条件,默认栈内Fragment数 <= 1时 , 优先滑动退出Activity , 而不是Fragment * * @return true: Activity可以滑动退出, 并且总是优先; false: Activity不允许滑动退出 */
      @Override
      public boolean swipeBackPriority() {
          return super.swipeBackPriority();
      }
    
        // 添加Fragment的相关操作
      private void addFragment(Fragment fromFragment, Fragment toFragment) {
          getSupportFragmentManager().beginTransaction()
                  .setCustomAnimations(R.anim.h_fragment_enter, R.anim.h_fragment_exit, R.anim.h_fragment_pop_enter, R.anim.h_fragment_pop_exit)
                  .add(R.id.main2_activity_container, toFragment, toFragment.getClass().getSimpleName())
                  .hide(fromFragment)
                  .addToBackStack(toFragment.getClass().getSimpleName())
                  .commit();
      }
    
      private void loadFragment(Fragment toFragment) {
          getSupportFragmentManager().beginTransaction()
                  .add(R.id.main2_activity_container, toFragment, toFragment.getClass().getSimpleName())
                  .addToBackStack(toFragment.getClass().getSimpleName())
                  .commit();
      }
    
    // @Override
    // public void onAddFragment(Fragment fromFragment, Fragment toFragment) { 
    // addFragment(fromFragment, toFragment);
    // }
    }

#### 4、使用自定义style防止出现滑动的黑色页面 ####

*  styles.xml

*  AndroidManifest.xml

### SwipeBackFragment更多方法 ###

// 设置滑动方向
     getSwipeBackLayout().setEdgeOrientation(SwipeBackLayout.EDGE_RIGHT); // EDGE_LEFT(默认),EDGE_ALL
     // 设置侧滑触摸生效区域 MAX,MED,MIN,custom
     setEdgeLevel(SwipeBackLayout.EdgeLevel edgeLevel)
     // 滑动过程监听
     getSwipeBackLayout().addSwipeListener(new SwipeBackLayout.OnSwipeListener() {
               @Override
               public void onDragStateChange(int state) {
                   // Drag state
               }
    
               @Override
               public void onEdgeTouch(int edgeFlag) {
                   // 触摸的边缘flag
               }
    
               @Override
               public void onDragScrolled(float scrollPercent) {
                   // 滑动百分比
               }
      });

## Fragmentation开源库 ##

*  [github-Fragmentation][]
 *  [Fragmentation教程][Fragmentation]
 *  [Fragmentation实现分析][SwipeBackFragment]

[github-SwipeBackFragment]: https://link.jianshu.com/?t=https://github.com/YoKeyword/SwipeBackFragment
[SwipeBackFragment]: https://www.jianshu.com/p/626229ca4dc2
[github-Fragmentation]: https://github.com/YoKeyword/Fragmentation
[Fragmentation]: https://www.jianshu.com/p/38f7994faa6b