Homework6

homework6/.gitignore

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+/build

homework6/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.2"
+
+    defaultConfig {
+        applicationId "com.example.homework6"
+        minSdkVersion 21
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+
+}

homework6/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

homework6/src/androidTest/java/com/example/homework6/ExampleInstrumentedTest.java

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+package com.example.homework6;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.homework6", appContext.getPackageName());
+    }
+}

homework6/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.homework6">
+
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:permission="android.permission.WRITE_EXTERNAL_STORAGE"
+        android:theme="@style/AppTheme">
+
+        <activity android:name=".CheckActivity"></activity>
+        <activity android:name=".EditItem" />
+        <activity android:name=".SecondActivity" />
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

homework6/src/main/java/com/example/homework6/CheckActivity.java

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+package com.example.homework6;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.CheckBox;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class CheckActivity extends AppCompatActivity {
+    private CheckBox checkStorage;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_check);
+
+        checkStorage = findViewById(R.id.checkStorage);
+
+        findViewById(R.id.backButton).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent backIntent = new Intent();
+                backIntent.putExtra("ISCHEKED", checkStorage.isChecked());
+                setResult(Activity.RESULT_OK, backIntent);
+                finish();
+            }
+        });
+        checkStorage.isChecked();
+    }
+}

homework6/src/main/java/com/example/homework6/EditItem.java

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+package com.example.homework6;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+
+public class EditItem extends AppCompatActivity {
+EditText fileName;
+EditText fileText;
+int position;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_edit_item);
+
+        Intent intent = getIntent();
+        fileName = findViewById(R.id.fileName);
+        fileText = findViewById(R.id.fileText);
+        fileName.setText(intent.getStringExtra("NAME"));
+        fileText.setText(intent.getStringExtra("TEXT"));
+        position = intent.getIntExtra("POSITION", 0);
+
+        findViewById(R.id.btnSave2).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent resultIntent = new Intent();
+                resultIntent.putExtra("NAMESAVE", fileName.getText().toString());
+                resultIntent.putExtra("TEXTSAVE", fileText.getText().toString());
+                resultIntent.putExtra("POSITIONSAVE", position);
+                setResult(Activity.RESULT_OK, resultIntent);
+                finish();
+            }
+        });
+    }
+}

homework6/src/main/java/com/example/homework6/MainActivity.java

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+package com.example.homework6;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.os.Environment;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.util.ArrayList;
+
+public class MainActivity extends AppCompatActivity {
+    private EditText etText;
+    private EditText writeFileName;
+    private Button btnSave;
+    private ArrayList<File> fileArray;
+    private Button toSecondActivity;
+    private boolean isCheked;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        etText = (EditText) findViewById(R.id.etText);
+        writeFileName = findViewById(R.id.writeFileName);
+        btnSave = (Button) findViewById(R.id.btnSave);
+        fileArray = new ArrayList<>();
+        toSecondActivity = findViewById(R.id.toSecondActivity);
+
+
+        btnSave.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (isCheked == false) {
+                    try {
+                        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(
+                                openFileOutput(writeFileName.getText().toString(), MODE_PRIVATE)));
+                        bw.write(etText.getText().toString());
+                        Toast.makeText(MainActivity.this, "Файл \"" +
+                                writeFileName.getText().toString() + "\" успешно сохранен во внутреннюю память", Toast.LENGTH_SHORT).show();
+                        fileArray.add(new File(writeFileName.getText().toString()));
+                        bw.close();
+
+                    } catch (FileNotFoundException e) {
+                        e.printStackTrace();
+                    } catch (IOException e) {
+                        e.printStackTrace();
+                    }
+                } else if (isCheked == true) {
+                    File externalPath = new File(Environment.getExternalStorageDirectory().getAbsolutePath(), "MyFiles");
+                    externalPath.mkdir();
+                    File externalFile = new File(externalPath, writeFileName.getText().toString());
+                    try {
+                        BufferedWriter bw = new BufferedWriter(new FileWriter(externalFile));
+                        bw.write(etText.getText().toString());
+                        Toast.makeText(MainActivity.this, "Файл \"" +
+                                writeFileName.getText().toString() + "\" успешно сохранен во внешнюю память", Toast.LENGTH_SHORT).show();
+                        fileArray.add(new File(writeFileName.getText().toString()));
+                        bw.close();
+                    } catch (IOException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        });
+
+        toSecondActivity.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(MainActivity.this, SecondActivity.class);
+                intent.putExtra(ArrayList.class.getSimpleName(), fileArray);
+                startActivityForResult(intent, 2000);
+            }
+        });
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        if (requestCode == 2000 && resultCode == Activity.RESULT_OK && data != null) {
+            this.fileArray = (ArrayList<File>) data.getExtras().getSerializable(ArrayList.class.getSimpleName());
+            this.isCheked = data.getBooleanExtra("ISCHEKED", false);
+        }
+        super.onActivityResult(requestCode, resultCode, data);
+    }
+}