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| package edu.hzuapp.androidlabs.net1808081001120; | ||
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| import android.content.Context; | ||
| import android.content.SharedPreferences; | ||
| import android.os.Bundle; | ||
| import android.view.View; | ||
| import android.widget.EditText; | ||
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| import androidx.appcompat.app.AppCompatActivity; | ||
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| 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"; | ||
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| @Override | ||
| protected void onCreate(Bundle savedInstanceState) { | ||
| super.onCreate(savedInstanceState); | ||
| setContentView(R.layout.activity_net1808081001120); | ||
| } | ||
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| public void change(View view){ | ||
| changeImformation(); | ||
| } | ||
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| public void restart(View view){ | ||
| String []texts=getImformation(); | ||
| changeEditText(texts); | ||
| } | ||
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| 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); // | ||
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| 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 | ||
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| 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 | ||
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| editor.commit(); // 保存 | ||
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| } | ||
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| 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); | ||
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| return editTexts; | ||
| } | ||
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| 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; | ||
|
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| } | ||
|
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,184 @@ | ||
| # 实验五：Android存储编程 | ||
| # 一、实验目标 | ||
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| 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 | ||
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| # 二、实验内容 | ||
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| - 根据选题要求使用文件存储 | ||
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| 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。 | ||
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| - 应用数据存储可采用数据库存储。 | ||
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| 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。 | ||
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| # 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" /> | ||
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| <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" /> | ||
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| <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" /> | ||
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| <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" /> | ||
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| <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" /> | ||
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| <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" /> | ||
| ``` | ||
|
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| ```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 | ||
|
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|
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| editor.commit(); // 保存 | ||
|
|
||
| } | ||
|
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| 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); | ||
|
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| return editTexts; | ||
| } | ||
|
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| 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 | ||
|
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| # 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。 |