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#5 #496 第5次实验 #1626

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#5 #496 第5次实验 #1626

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#5 #456 第5次实验
Jan 8, 2021
e7206d9
Merge branch 'master' of https://github.com/SaTarU1IX/android-labs-2020
Jan 8, 2021
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Create lab5.md
SaTarU1IX Jan 8, 2021
4af8a54
Update lab5.md
SaTarU1IX Jan 8, 2021
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97 changes: 97 additions & 0 deletions students/net1808081001120/Storage.java
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package edu.hzuapp.androidlabs.net1808081001120;

import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

import androidx.appcompat.app.AppCompatActivity;

public class Storage extends AppCompatActivity{
private static final String chineseeditText = "chineseeditText";
private static final String matheditText = "matheditText";
private static final String englisheditText = "englisheditText";
private static final String biologyeditText= "biologyeditText";
private static final String geographyeditText= "geographyeditText";
private static final String politicseditText= "politicseditText";

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_net1808081001120);
}

public void change(View view){
changeImformation();
}

public void restart(View view){
String []texts=getImformation();
changeEditText(texts);
}

public String[] getImformation(){
SharedPreferences settings = this.getSharedPreferences(
"MY_IMFORMATION", // 设置的标识、APP可以有多的偏好设置
Context.MODE_PRIVATE); //

String contens[]=new String[6];
contens[0]= settings.getString(chineseeditText, "");
contens[1]= settings.getString(matheditText, "");
contens[2]= settings.getString(englisheditText, "");
contens[3]= settings.getString(biologyeditText, "");
contens[4]= settings.getString(geographyeditText, "");
contens[5]= settings.getString(politicseditText, "");
return contens;
}
public void changeImformation(){
SharedPreferences settings = this.getSharedPreferences(
"MY_IMFORMATION", // 设置的标识、APP可以有多的偏好设置
Context.MODE_PRIVATE); //
//SharedPreferences settings = this.getSharedPreferences(
// Context.MODE_PRIVATE); // 不指定ID、使用默认偏好设置（只有一个）
SharedPreferences.Editor editor = settings.edit(); // 开始编辑设置

String imformations[]=getText();
editor.putString(chineseeditText,imformations[0]); // 字符串值
editor.putString(matheditText ,imformations[1]); // 字符串值
editor.putString(englisheditText,imformations[2]); // 字符串值
editor.putString(biologyeditText,imformations[3]); // 字符串值
editor.putString(geographyeditText,imformations[4]); // 字符串值
editor.putString(politicseditText,imformations[5]); // 字符串值


editor.commit(); // 保存

}

public EditText[] getEditText(){
EditText editTexts[]=new EditText[7];
editTexts[0]=(EditText)findViewById(R.id.editTextTextPersonName2);
editTexts[1]=(EditText)findViewById(R.id.editTextTextPersonName3);
editTexts[2]=(EditText)findViewById(R.id.editTextTextPersonName4);
editTexts[3]=(EditText)findViewById(R.id.editTextTextPersonName5);
editTexts[4]=(EditText)findViewById(R.id.editTextTextPersonName6);
editTexts[5]=(EditText)findViewById(R.id.editTextTextPersonName7);

return editTexts;
}

public void changeEditText(String[] imformations){
EditText []editTexts=getEditText();
for(int i=0;i<imformations.length;i++) {
editTexts[i].setText(imformations[i]);
}
}
public String[] getText(){
EditText []editTexts=getEditText();
String texts[]=new String[6];
for(int i=0;i<6;i++){
texts[i]=editTexts[i].getText().toString();
}
return texts;

}

}
184 changes: 184 additions & 0 deletions students/net1808081001120/lab5.md
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# 实验五：Android存储编程
# 一、实验目标

1. 了解Andoid的存储手段
2. 掌握Android的文件存储
3. 掌握Android的数据库存储

# 二、实验内容

- 根据选题要求使用文件存储

1. 将应用产生的数据保存到文件存储中；
2. 说明使用的文件存储方式：内部 or 外部；
3. 将运行结果截图。

- 应用数据存储可采用数据库存储。

1. 将应用产生的数据存储到数据库中；
2. 将应用运行结果截图。

# 三、实验步骤
```xml
<EditText
android:id="@+id/editTextTextPersonName2"
android:layout_width="80dp"
android:layout_height="42dp"
android:ems="10"
android:gravity="center"
android:inputType="textPersonName"
android:text="1"
app:layout_constraintStart_toStartOf="@+id/textView4"
app:layout_constraintTop_toBottomOf="@+id/textView4" />

<EditText
android:id="@+id/editTextTextPersonName3"
android:layout_width="80dp"
android:layout_height="42dp"
android:ems="10"
android:gravity="center"
android:inputType="textPersonName"
android:text="2"
app:layout_constraintStart_toStartOf="@+id/editTextTextPersonName2"
app:layout_constraintTop_toBottomOf="@+id/editTextTextPersonName2" />

<EditText
android:id="@+id/editTextTextPersonName4"
android:layout_width="80dp"
android:layout_height="42dp"
android:ems="10"
android:gravity="center"
android:inputType="textPersonName"
android:text="3"
app:layout_constraintStart_toStartOf="@+id/editTextTextPersonName3"
app:layout_constraintTop_toBottomOf="@+id/editTextTextPersonName3" />

<EditText
android:id="@+id/editTextTextPersonName5"
android:layout_width="102dp"
android:layout_height="42dp"
android:ems="10"
android:inputType="textPersonName"
app:layout_constraintStart_toEndOf="@+id/editTextTextPersonName2"
app:layout_constraintTop_toBottomOf="@+id/textView5" />

<EditText
android:id="@+id/editTextTextPersonName6"
android:layout_width="102dp"
android:layout_height="42dp"
android:ems="10"
android:inputType="textPersonName"
app:layout_constraintStart_toEndOf="@+id/editTextTextPersonName3"
app:layout_constraintTop_toBottomOf="@+id/editTextTextPersonName5" />

<EditText
android:id="@+id/editTextTextPersonName7"
android:layout_width="102dp"
android:layout_height="42dp"
android:ems="10"
android:inputType="textPersonName"
app:layout_constraintStart_toEndOf="@+id/editTextTextPersonName4"
app:layout_constraintTop_toBottomOf="@+id/editTextTextPersonName6" />
```

```java
package edu.hzuapp.androidlabs.net1808081001120;

import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

import androidx.appcompat.app.AppCompatActivity;

public class Storage extends AppCompatActivity{
private static final String chineseeditText = "chineseeditText";
private static final String matheditText = "matheditText";
private static final String englisheditText = "englisheditText";
private static final String biologyeditText= "biologyeditText";
private static final String geographyeditText= "geographyeditText";
private static final String politicseditText= "politicseditText";

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_net1808081001120);
}

public void change(View view){
changeImformation();
}

public void restart(View view){
String []texts=getImformation();
changeEditText(texts);
}

public String[] getImformation(){
SharedPreferences settings = this.getSharedPreferences(
"MY_IMFORMATION", // 设置的标识、APP可以有多的偏好设置
Context.MODE_PRIVATE); //

String contens[]=new String[6];
contens[0]= settings.getString(chineseeditText, "");
contens[1]= settings.getString(matheditText, "");
contens[2]= settings.getString(englisheditText, "");
contens[3]= settings.getString(biologyeditText, "");
contens[4]= settings.getString(geographyeditText, "");
contens[5]= settings.getString(politicseditText, "");
return contens;
}
public void changeImformation(){
SharedPreferences settings = this.getSharedPreferences(
"MY_IMFORMATION", // 设置的标识、APP可以有多的偏好设置
Context.MODE_PRIVATE); //
//SharedPreferences settings = this.getSharedPreferences(
// Context.MODE_PRIVATE); // 不指定ID、使用默认偏好设置（只有一个）
SharedPreferences.Editor editor = settings.edit(); // 开始编辑设置

String imformations[]=getText();
editor.putString(chineseeditText,imformations[0]); // 字符串值
editor.putString(matheditText ,imformations[1]); // 字符串值
editor.putString(englisheditText,imformations[2]); // 字符串值
editor.putString(biologyeditText,imformations[3]); // 字符串值
editor.putString(geographyeditText,imformations[4]); // 字符串值
editor.putString(politicseditText,imformations[5]); // 字符串值


editor.commit(); // 保存

}

public EditText[] getEditText(){
EditText editTexts[]=new EditText[7];
editTexts[0]=(EditText)findViewById(R.id.editTextTextPersonName2);
editTexts[1]=(EditText)findViewById(R.id.editTextTextPersonName3);
editTexts[2]=(EditText)findViewById(R.id.editTextTextPersonName4);
editTexts[3]=(EditText)findViewById(R.id.editTextTextPersonName5);
editTexts[4]=(EditText)findViewById(R.id.editTextTextPersonName6);
editTexts[5]=(EditText)findViewById(R.id.editTextTextPersonName7);

return editTexts;
}

public void changeEditText(String[] imformations){
EditText []editTexts=getEditText();
for(int i=0;i<imformations.length;i++) {
editTexts[i].setText(imformations[i]);
}
}
public String[] getText(){
EditText []editTexts=getEditText();
String texts[]=new String[6];
for(int i=0;i<6;i++){
texts[i]=editTexts[i].getText().toString();
}
return texts;
}
}
```
# 四、实验结果

# 五、实验心得体会
本次实验利用数据库存储，将数据存储在数据库中，并在ListView显示出来。学习了Android的存储手段，熟悉了数据库相关操作的编写。