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我在一个简单的项目。我有一个包含一个片段的活动（使用java附加的片段）。片段有2个文本视图，它采用整数和字符串动态更改，但在旋转屏幕时，片段不能恢复或继续动态更改。即使我的按钮点击停止工作。但onSaveInstanceState（Bundle outState）应该正常工作，错误在哪里。我下面的代码：Android - 屏幕旋转时单片段数据保存不正常
活动Java代码：
package com.blogspot.imti.mygame;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;
public class FragmentHolder extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fragment_holder);
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
GameA gamea = new GameA();
fragmentTransaction.add(R.id.holder_rl1, gamea, "gameATag");
fragmentTransaction.commit();
}
}
片段java代码：
package com.blogspot.imti.mygame;
import android.os.Bundle;
import android.app.Fragment;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
/**
* A simple {@link Fragment} subclass.
*/
public class GameA extends Fragment implements View.OnClickListener{
TextView a_tv2;
EditText a_et1;
Button a_b1;
int stepClickCounter;
String [] stepDescriptions = {"Step 1 working",
"Step 2 working",
"Step 3 working",
"Step 4 working",
"Step 5 working",
"Step 6 working",
"Step 7 working",
"Step 8 working"};
String stepMessage, stepText;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
((AppCompatActivity) getActivity()).getSupportActionBar().hide();
View view = inflater.inflate(R.layout.fragment_game, container, false);
if(savedInstanceState!=null){
stepClickCounter = savedInstanceState.getInt("stepCounter");
stepMessage = (String)savedInstanceState.get("stepDescription");
TextView tv = (TextView)view.findViewById(R.id.gamea_tv2);
tv.setText(stepMessage);
}
return view;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
a_tv2 = (TextView)getActivity().findViewById(R.id.gamea_tv2);
a_b1 = (Button)getActivity().findViewById(R.id.gamea_b1);
a_b1.setOnClickListener(this);
}
@Override
public void onClick(View v) {
stepClickCounter++;
goSet();
}
public void goSet(){
if (stepClickCounter==0) {
stepMessage = stepDescriptions[0];
a_tv2.setText(stepMessage);
Toast.makeText(getActivity(), "step 1", Toast.LENGTH_LONG).show();
}else if (stepClickCounter==1) {
stepMessage = stepDescriptions[1];
a_tv2.setText(stepMessage);
Toast.makeText(getActivity(), "step 2", Toast.LENGTH_LONG).show();
}else if (stepClickCounter==2) {
stepMessage = stepDescriptions[2];
a_tv2.setText(stepMessage);
Toast.makeText(getActivity(), "step 3", Toast.LENGTH_LONG).show();
}else if (stepClickCounter==3) {
stepMessage = stepDescriptions[3];
a_tv2.setText(stepMessage);
Toast.makeText(getActivity(), "step 4", Toast.LENGTH_LONG).show();
}else if (stepClickCounter==4) {
stepMessage = stepDescriptions[4];
a_tv2.setText(stepMessage);
Toast.makeText(getActivity(), "step 5", Toast.LENGTH_LONG).show();
}else if (stepClickCounter==5) {
stepMessage = stepDescriptions[5];
a_tv2.setText(stepMessage);
Toast.makeText(getActivity(), "step 6", Toast.LENGTH_LONG).show();
}else if (stepClickCounter==6) {
stepMessage = stepDescriptions[6];
a_tv2.setText(stepMessage);
Toast.makeText(getActivity(), "step 7", Toast.LENGTH_LONG).show();
}else if (stepClickCounter==7) {
stepMessage = stepDescriptions[7];
a_tv2.setText(stepMessage);
//a_et1.setHint("Final Result Here");
a_b1.setText("Finish");
}else {
Toast.makeText(getActivity(), "Show output", Toast.LENGTH_LONG).show();
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("stepCounter", stepClickCounter);
outState.putString("stepDescription", stepMessage);
}
}
片段XML代码：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.blogspot.imti.mygame.GameA"
android:background="#ECEFF1">
<ScrollView
android:id="@+id/gamea_sv1"
android:layout_height="match_parent"
android:layout_width="match_parent"
>
<RelativeLayout
android:id="@+id/gamea_rl1"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
<TextView
android:id="@+id/gamea_tv2"
android:layout_width="wrap_content"
android:layout_height="140dp"
android:text="Step 1 working"
android:textSize="22dp"
android:textColor="#FF7043"
android:textStyle="bold"
android:paddingLeft="15dp"
android:paddingRight="15dp"
android:paddingTop="10dp"
android:paddingBottom="5dp"/>
<Button
android:id="@+id/gamea_b1"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:text="NEXT STEP"
android:textStyle="bold"
android:textSize="24dp"
android:textColor="#ECEFF1"
android:background="#2196F3"
android:layout_below="@id/gamea_tv2"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"/>
<ImageView
android:id="@+id/gamea_iv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/birthdayicon"
android:layout_below="@id/gamea_b1"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
http://stackoverflow.com/questions/10126845/handle-screen-rotation-without-losing-data-android – Ajinkya
这个问题是重复的，已经回答，请 – Boopathi