具体情况如图:

Fragment生命周期.png
布局:

fragment生命周期布局.gif
LifeOfFgActivity
public class LifeOfFgActivity extends AppCompatActivity { private static final String TAG = "LifeOfFgActivity"; @BindView(R.id.btn_left)
Button mTvTitle1; @BindView(R.id.btn_right)
Button mTvTitle2; @BindView(R.id.ll_life_root)
LinearLayout mLlLifeRoot; @BindView(R.id.fl_life_root)
FrameLayout mFlLifeRoot; private FragmentManager mFm; private FragmentTransaction mFt; @Override
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.activity_life);
Log.e(TAG, "onCreate: &&&&&&LifeOfFgActivity");
ButterKnife.bind(this);
initFragment();//初始Fragment
} @Override
protected void onStart() { super.onStart();
Log.e(TAG, "onStart: &&&&&&LifeOfFgActivity");
} @Override
protected void onResume() { super.onResume();
Log.e(TAG, "onResume: &&&&&&LifeOfFgActivity");
} @Override
protected void onPause() { super.onPause();
Log.e(TAG, "onPause: &&&&&&LifeOfFgActivity");
} @Override
protected void onStop() { super.onStop();
Log.e(TAG, "onStop: &&&&&&LifeOfFgActivity");
} @Override
protected void onRestart() { super.onRestart();
Log.e(TAG, "onRestart: &&&&&&LifeOfFgActivity");
} @Override
protected void onDestroy() { super.onDestroy();
Log.e(TAG, "onDestroy: &&&&&&LifeOfFgActivity");
} private void initFragment() {
mFm = getFragmentManager();//1.获取FragmentManager
mFt = mFm.beginTransaction();//2.fm开启事务
mFt.add(R.id.fl_life_root, new Fragment1()); //3.动态添加
mFt.commit();//4.提交事务
} @OnClick({R.id.btn_left, R.id.btn_right}) public void onViewClicked(View view) {
mFt = mFm.beginTransaction();//2.fm开启事务
switch (view.getId()) { case R.id.btn_left:
mFlLifeRoot.removeAllViews();//先清屏
mFt.replace(R.id.fl_life_root, new Fragment1()); //3.动态添加
break; case R.id.btn_right:
mFlLifeRoot.removeAllViews();//先清屏
mFt.replace(R.id.fl_life_root, new Fragment2()); //3.动态添加
break;
}
mFt.commit();//4.提交事务
}
}Fragment1
public class Fragment1 extends Fragment { private static final String TAG = "Fragment1";
@Override
public void onAttach(Context context) { super.onAttach(context);
Log.e(TAG, "onAttach: ====Fragment1");
} @Override
public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
Log.e(TAG, "onCreate: ====Fragment1");
} @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Log.e(TAG, "onCreateView:====Fragment1 "); return inflater.inflate(R.layout.fragment_fragment1, container, false);
} @Override
public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState);
Log.e(TAG, "onActivityCreated:====Fragment1 ");
} @Override
public void onStart() { super.onStart();
Log.e(TAG, "onStart: ====Fragment1");
} @Override
public void onResume() { super.onResume();
Log.e(TAG, "onResume:====Fragment1 ");
} @Override
public void onPause() { super.onPause();
Log.e(TAG, "onPause:====Fragment1 ");
} @Override
public void onStop() { super.onStop();
Log.e(TAG, "onStop: ====Fragment1");
} @Override
public void onDestroyView() { super.onDestroyView();
Log.e(TAG, "onDestroyView: ====Fragment1");
} @Override
public void onDestroy() { super.onDestroy();
Log.e(TAG, "onDestroy:====Fragment1 ");
} @Override
public void onDetach() { super.onDetach();
Log.e(TAG, "onDetach:====Fragment1 ");
}
}Fragment2
public class Fragment2 extends Fragment { private static final String TAG = "Fragment2"; @Override
public void onAttach(Context context) { super.onAttach(context);
Log.e(TAG, "onAttach: >>>>>Fragment2");
} @Override
public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
Log.e(TAG, "onCreate: >>>>>Fragment2");
} @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Log.e(TAG, "onCreateView:>>>>>Fragment2 "); return inflater.inflate(R.layout.fragment_fragment2, container, false);
} @Override
public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState);
Log.e(TAG, "onActivityCreated:>>>>>Fragment2 ");
} @Override
public void onStart() { super.onStart();
Log.e(TAG, "onStart: >>>>>Fragment2");
} @Override
public void onResume() { super.onResume();
Log.e(TAG, "onResume:>>>>>Fragment2 ");
} @Override
public void onPause() { super.onPause();
Log.e(TAG, "onPause:>>>>>Fragment2 ");
} @Override
public void onStop() { super.onStop();
Log.e(TAG, "onStop: >>>>>Fragment2");
} @Override
public void onDestroyView() { super.onDestroyView();
Log.e(TAG, "onDestroyView: >>>>>Fragment2");
} @Override
public void onDestroy() { super.onDestroy();
Log.e(TAG, "onDestroy:>>>>>Fragment2 ");
} @Override
public void onDetach() { super.onDetach();
Log.e(TAG, "onDetach:>>>>>Fragment2 ");
}
}
作者:张风捷特烈
链接:https://www.jianshu.com/p/7f6903b794d5
随时随地看视频