Add Internal Storage Example

Author: georgeerol

Diff for: 3.AndroidFragments/AndroidFragment/.idea/misc.xml

@@ -1,13 +1,86 @@
 package com.example.storage.internal.fouliex.androidinternalstorage;
 
+import android.content.Context;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
 
 public class MainActivity extends AppCompatActivity {
+    EditText editTextFileName, editTextData;
+    Button saveButton, readButton;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        editTextFileName = (EditText) findViewById(R.id.editText1);
+        editTextData = (EditText) findViewById(R.id.editText2);
+        saveButton = (Button) findViewById(R.id.button1);
+        readButton = (Button) findViewById(R.id.button2);
+
+        //Performing Action on Read Button
+        performActionOnSave();
+        //Performing Action on Save Button
+        performActionOnRead();
+
+    }
+
+    private void performActionOnRead() {
+        readButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                String filename = editTextFileName.getText().toString();
+                StringBuffer stringBuffer = new StringBuffer();
+
+                try {
+                    BufferedReader inputReader = new BufferedReader(new InputStreamReader(openFileInput(filename)));
+                    String inputString;
+                    while ((inputString = inputReader.readLine()) != null) {
+                        stringBuffer.append(inputString + "\n");
+                    }
+                } catch (FileNotFoundException e) {
+                    e.printStackTrace();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+                Toast.makeText(getApplicationContext(), stringBuffer.toString(),
+                        Toast.LENGTH_LONG).show();
+
+            }
+        });
+    }
+
+    void performActionOnSave() {
+        saveButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                String filename = editTextFileName.getText().toString();
+                String data = editTextData.getText().toString();
+
+                FileOutputStream fos;
+
+                try {
+                    fos = openFileOutput(filename, Context.MODE_PRIVATE);
+                    fos.write(data.getBytes());
+                    fos.close();
+
+                    Toast.makeText(getApplicationContext(), filename + " saved", Toast.LENGTH_LONG).show();
+                } catch (FileNotFoundException e) {
+                    e.printStackTrace();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        });
     }
 }

Diff for: 7.AndroidStorage/AndroidInternalStorage/app/src/main/java/com/example/storage/internal/fouliex/androidinternalstorage/MainActivity.java

@@ -10,8 +10,53 @@
     android:paddingTop="@dimen/activity_vertical_margin"
     tools:context="com.example.storage.internal.fouliex.androidinternalstorage.MainActivity">
 
+    <EditText
+        android:id="@+id/editText1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentRight="true"
+        android:layout_alignParentTop="true"
+        android:layout_marginRight="20dp"
+        android:layout_marginTop="24dp"
+        android:ems="10">
+
+        <requestFocus />
+    </EditText>
+
+    <EditText
+        android:id="@+id/editText2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignRight="@+id/editText1"
+        android:layout_below="@id/editText1"
+        android:layout_marginTop="24dp"
+        android:ems="10" />
+
     <TextView
+        android:id="@+id/textView1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignBaseline="@+id/editText1"
+        android:layout_alignBottom="@id/editText1"
+        android:layout_alignParentLeft="true"
+        android:text="File Name:" />
+
+    <Button
+        android:id="@+id/button1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignLeft="@id/editText2"
+        android:layout_below="@id/editText2"
+        android:layout_marginLeft="70dp"
+        android:layout_marginTop="16dp"
+        android:text="save" />
+
+    <Button
+        android:id="@+id/button2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!" />
+        android:layout_alignBaseline="@+id/button1"
+        android:layout_alignBottom="@id/button1"
+        android:layout_toRightOf="@id/button1"
+        android:text="read" />
 </RelativeLayout>