Lesson3

app/build.gradle

@@ -7,8 +7,13 @@ android {
         minSdkVersion 21
         targetSdkVersion 28
         versionCode 1
-        versionName "1.0"
+        versionName "pic.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        compileOptions {
+            sourceCompatibility JavaVersion.VERSION_1_8
+            targetCompatibility JavaVersion.VERSION_1_8
+        }
+
     }
     buildTypes {
         release {
@@ -24,6 +29,6 @@ dependencies {
     implementation 'com.android.support.constraint:constraint-layout:1.1.3'
     testImplementation 'junit:junit:4.12'
     implementation 'io.reactivex.rxjava2:rxandroid:2.0.2'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test:runner:pic.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
 }

app/src/main/java/com/geekbrains/lessons/myanotherapp/ActivityForLesson2.java

@@ -1,38 +1,36 @@
 package com.geekbrains.lessons.myanotherapp;
 
-import android.support.v7.app.AppCompatActivity;
+import android.graphics.Bitmap;
+import android.graphics.drawable.Drawable;
 import android.os.Bundle;
-import android.text.Editable;
-import android.text.TextWatcher;
-import android.util.Log;
+import android.support.v7.app.AppCompatActivity;
 import android.widget.EditText;
+import android.widget.ImageView;
 import android.widget.TextView;
 
-import java.util.List;
+import java.io.File;
+import java.io.FileOutputStream;
 
 import io.reactivex.Observable;
-import io.reactivex.ObservableEmitter;
-import io.reactivex.ObservableOnSubscribe;
 import io.reactivex.Observer;
 import io.reactivex.disposables.Disposable;
-import io.reactivex.subjects.PublishSubject;
 
 public class ActivityForLesson2 extends AppCompatActivity {
 
     EditText editText;
     TextView tv;
-    Observable<String> observable;
-    Observable<String> observable2;
-    Observer<String> observer;
-    Observer<String> observer2;
-    PublishSubject<String> subject;
+    ImageView iv;
+    Bitmap bmp;
+    File file;
+    Observable<Drawable> observable;
+    Observer<Drawable> observer;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_for_lesson2);
         initGUI();
-
+        file=new File("/Users/Robert/AndroidStudioProjects/MyAnotherApp/app/src/main/res/drawable-v24/pic.jpg");
         /*editText.addTextChangedListener(new TextWatcher() {
             @Override
             public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
@@ -50,21 +48,27 @@ public void afterTextChanged(Editable editable) {
                 tv.setText(editText.getText());
             }
         });*/
-        subject=PublishSubject.create();
-        observable2=Observable.just("1","2","3");
-        observable = Observable.just("a","b","c");
-        observer2=new Observer<String>() {
+        observable = Observable.just(getDrawable(R.drawable.pic));
+        observer = new Observer<Drawable>() {
             @Override
             public void onSubscribe(Disposable d) {
 
             }
 
             @Override
-            public void onNext(String s) {
-
-                Log.d("Dto", s);
-
-
+            public void onNext(final Drawable drawable) {
+                new Thread(() -> {
+                    try {
+                        FileOutputStream out = new FileOutputStream(file);
+                        bmp.compress(Bitmap.CompressFormat.PNG, 100, out); //100-best quality
+                        out.close();
+
+                    }
+                    catch (Exception e)
+                    {
+                        e.printStackTrace();
+                    }
+                }).start();
             }
 
             @Override
@@ -77,44 +81,18 @@ public void onComplete() {
 
             }
         };
+        observable.subscribe(observer);
 
-        observer = new Observer<String>() {
-            @Override
-            public void onNext(String s) {
-                Log.d("Dto", s);
-
-            }
-
-            @Override
-            public void onError(Throwable e) {
-            }
-            @Override
-            public void onComplete() {
-            }
-            @Override
-            public void onSubscribe(Disposable d)
-            {
-
-            }
-
-
-        };
-        observable.subscribe(subject);
-        observable2.subscribe(subject);
-        subject.subscribe(observer);
-        subject.subscribe(observer2);
-        subject.onNext("Mystring");
 
     }
 
 
-
-
-    private void initGUI()
-    {
-        editText=findViewById(R.id.EditText);
-        tv=findViewById(R.id.textview);
+    private void initGUI() {
+        editText = findViewById(R.id.EditText);
+        tv = findViewById(R.id.textview);
+        iv=findViewById(R.id.imageView);
 
     }
 
+
 }

app/src/main/res/layout/activity_for_lesson2.xml

@@ -4,27 +4,39 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".ActivityForLesson2">
+    tools:context=".ActivityForLesson2"
+    tools:layout_editor_absoluteY="81dp">
 
 
     <TextView
         android:id="@+id/textview"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="73dp"
+        android:layout_marginStart="130dp"
+        android:layout_marginBottom="43dp"
         android:text="text"
-        app:layout_constraintBottom_toTopOf="@+id/EditText"
-        app:layout_constraintStart_toStartOf="@+id/EditText" />
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
 
     <EditText
         android:id="@+id/EditText"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginEnd="157dp"
+        android:layout_marginEnd="30dp"
+        android:layout_marginBottom="62dp"
         android:text="text"
-        android:layout_marginBottom="89dp"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent" />
 
+    <ImageView
+        android:id="@+id/imageView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="28dp"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:srcCompat="@drawable/pic" />
+
 
 </android.support.constraint.ConstraintLayout>

build.gradle

@@ -15,6 +15,7 @@ buildscript {
     }
 }
 
+
 allprojects {
     repositories {
         google()