Frgment生命周期

Fragment生命周期：        与Actiivity类似，Fragment也存在如下状态            运行状态：Fragment获得焦点，用户可见                  1.添加Fragment09-22 11:06:53.639 21950-21950/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onAttach---09-22 11:06:53.644 21950-21950/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onCreate---09-22 11:06:53.644 21950-21950/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onCreateView---09-22 11:06:53.649 21950-21950/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onActivityCreated---09-22 11:06:53.649 21950-21950/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onStart---09-22 11:06:53.649 21950-21950/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onResume--- 运行状态            状态状态：其他Activity位于前台，Fragment可见但是失去焦点09-22 11:11:56.614 25118-25118/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onPause---09-22 11:11:56.644 25118-25118/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---启动了窗口Activity---            停止状态：该Fragment不可见，失去焦点09-22 11:13:36.139 25118-25118/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onStop---            销毁状态：该Fragment被完全删除，或该Fragment所在的Activity被结束09-22 11:16:02.669 25118-25118/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onDestroyView---09-22 11:16:02.670 25118-25118/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onDestroy---09-22 11:16:02.670 25118-25118/testpermission.fragmentliftcycle D/Test-LifecycleFragment: ---onDetach---

Fragment代码：

package testpermission.fragmentliftcycle;import android.app.Activity;import android.app.Fragment;import android.os.Bundle;import android.util.Log;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.TextView;/** * Created by 75213 on 2016/9/22. */public class LifecycleFragment extends Fragment {final String TAG = "Test-LifecycleFragment";@Override public void onAttach(Activity activity) {super.onAttach(activity); Log.d(TAG , "---onAttach---"); }@Override public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); Log.d(TAG, "---onCreate---"); }@Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { Log.d(TAG , "---onCreateView---"); TextView tv = new TextView(getActivity()); tv.setGravity(Gravity.CENTER_HORIZONTAL); tv.setText("测试Fragment生命周期");return tv; }@Override public void onActivityCreated(Bundle savedInstanceState) {super.onActivityCreated(savedInstanceState); Log.d(TAG, "---onActivityCreated---"); }@Override public void onStart() {super.onStart(); Log.d(TAG, "---onStart---"); }@Override public void onResume() {super.onResume(); Log.d(TAG, "---onResume---"); }@Override public void onPause() {super.onPause(); Log.d(TAG, "---onPause---"); }@Override public void onStop() {super.onStop(); Log.d(TAG, "---onStop---"); }@Override public void onDestroyView() {super.onDestroyView(); Log.d(TAG, "---onDestroyView---"); }@Override public void onDestroy() {super.onDestroy(); Log.d(TAG, "---onDestroy---"); }@Override public void onDetach() {super.onDetach(); Log.d(TAG, "---onDetach---"); }}MainActivity代码 package testpermission.fragmentliftcycle;import android.content.Intent;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;public class MainActivity extends AppCompatActivity {private Button bn , bn2 ;@Override protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);bn = (Button)findViewById(R.id.bn);bn2 = (Button)findViewById(R.id.bn2);bn.setOnClickListener(new View.OnClickListener() {@Override public void onClick(View view) { LifecycleFragment fragment = new LifecycleFragment(); getFragmentManager().beginTransaction().replace(R.id.fragment , fragment).commit(); } });bn2.setOnClickListener(new View.OnClickListener() {@Override public void onClick(View view) { Intent intent = new Intent(MainActivity.this , WindowActivity.class); startActivity(intent); } }); }}

转载于:https://www.cnblogs.com/Rookietake/p/5895593.html

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