Use data binding for main content view

.idea/misc.xml

@@ -24,7 +24,7 @@
       </value>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/build.gradle

@@ -16,6 +16,13 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+    compileOptions {
+        targetCompatibility 1.8
+        sourceCompatibility 1.8
+    }
+        dataBinding {
+        enabled = true
+}
 }
 
 dependencies {
@@ -24,8 +31,17 @@ dependencies {
     implementation 'com.android.support.constraint:constraint-layout:1.0.2'
     implementation 'com.android.support:design:26.1.0'
     implementation 'com.squareup.okhttp3:okhttp:3.9.1'
+
+    // ViewModel and LiveData
+    implementation "android.arch.lifecycle:extensions:1.1.0"
+    annotationProcessor "android.arch.lifecycle:compiler:1.1.0"
+
+    // Java8 support for Lifecycles
+    implementation "android.arch.lifecycle:common-java8:1.1.0"
+
     compile 'org.jsoup:jsoup:1.10.1'
     compile group: 'com.google.code.gson', name: 'gson', version: '2.8.2'
+
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.1'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'

app/src/main/java/eu/stuifzand/micropub/MainActivity.java

@@ -6,44 +6,46 @@ import android.accounts.AccountManagerCallback;
 import android.accounts.AccountManagerFuture;
 import android.accounts.AuthenticatorException;
 import android.accounts.OperationCanceledException;
+import android.app.Activity;
+import android.arch.lifecycle.ViewModelProviders;
 import android.content.Intent;
+import android.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.design.widget.FloatingActionButton;
-import android.support.design.widget.Snackbar;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.text.TextUtils;
 import android.util.Log;
-import android.view.View;
 import android.view.Menu;
 import android.view.MenuItem;
-import android.widget.EditText;
+import android.view.View;
 import android.widget.Toast;
 
 import java.io.IOException;
 
-import okhttp3.Call;
+import eu.stuifzand.micropub.databinding.ActivityMainBinding;
-import okhttp3.OkHttpClient;
-import okhttp3.Request;
-import okhttp3.Response;
 
 public class MainActivity extends AppCompatActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
+//        setContentView(R.layout.activity_main);
+        ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
+        PostViewModel model = ViewModelProviders.of(MainActivity.this).get(PostViewModel.class);
+        binding.setViewModel(model);
+
         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
 
-        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
+//        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
-        fab.setOnClickListener(new View.OnClickListener() {
+//        fab.setOnClickListener(new View.OnClickListener() {
-            @Override
+//            @Override
-            public void onClick(View view) {
+//            public void onClick(View view) {
-                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
+//                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
-                        .setAction("Action", null).show();
+//                        .setAction("Action", null).show();
-            }
+//            }
-        });
+//        });
+
     }
 
     @Override
@@ -76,8 +78,6 @@ public class MainActivity extends AppCompatActivity {
         AccountManager am = AccountManager.get(this);
         Bundle options = new Bundle();
         am.getAuthTokenByFeatures("Indieauth", "token", null, this, options, null, new OnTokenAcquired(true), null);
-
-
     }
 
     private class OnTokenAcquired implements AccountManagerCallback<Bundle> {
@@ -103,19 +103,23 @@ public class MainActivity extends AppCompatActivity {
                 String token = bundle.getString(AccountManager.KEY_AUTHTOKEN);
 
                 if (sendMessage) {
-                    EditText mEdit = (EditText) findViewById(R.id.content);
+                    PostViewModel model = ViewModelProviders.of(MainActivity.this).get(PostViewModel.class);
                     AccountManager am = AccountManager.get(MainActivity.this);
                     Account[] accounts = am.getAccountsByType(bundle.getString("accountType"));
                     String accountName = bundle.getString("authAccount");
-                    String micropub = null;
+
+                    String micropubBackend = null;
                     for (Account account : accounts) {
                         if (account.name.equals(accountName)) {
-                            micropub = am.getUserData(account, "micropub");
+                            micropubBackend = am.getUserData(account, "micropub");
                         }
                     }
-                    String micropubBackend = micropub;
+
+                    if (micropubBackend != null) {
                         Log.i("micropub", "Sending message to " + micropubBackend);
-                    new PostMessageTask(MainActivity.this, token, mEdit).execute(micropubBackend, mEdit.getText().toString());
+                        new PostMessageTask(MainActivity.this, token, model, micropubBackend)
+                                .execute();
+                    }
                 }
 
                 Log.d("micropub", "GetTokenForAccount Bundle is " + token);

app/src/main/java/eu/stuifzand/micropub/Post.java

@@ -0,0 +1,23 @@
+package eu.stuifzand.micropub;
+
+import okhttp3.FormBody;
+
+public class Post {
+    private String content;
+
+    public Post(String content) {
+        this.content = content;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public void applyToFormBodyBuilder(FormBody.Builder builder) {
+        builder.add("content", content);
+    }
+}

app/src/main/java/eu/stuifzand/micropub/PostMessageTask.java

@@ -3,8 +3,6 @@ package eu.stuifzand.micropub;
 import android.content.Context;
 import android.os.AsyncTask;
 import android.util.Log;
-import android.view.View;
-import android.widget.EditText;
 import android.widget.Toast;
 
 import java.io.IOException;
@@ -19,25 +17,28 @@ import okhttp3.Response;
 
 public class PostMessageTask extends AsyncTask<String, Void, String> {
     private final String accessToken;
-    private EditText mEdit;
+    private PostViewModel postModel;
+    private String micropubBackend;
     private WeakReference<Context> context;
 
-    public PostMessageTask(Context context, String accessToken, EditText mEdit) {
+    public PostMessageTask(Context context, String accessToken, PostViewModel postModel, String micropubBackend) {
         this.context = new WeakReference<Context>(context);
         this.accessToken = accessToken;
-        this.mEdit = mEdit;
+        assert postModel != null;
+        this.postModel = postModel;
+        this.micropubBackend = micropubBackend;
     }
 
     @Override
     protected String doInBackground(String... strings) {
-        RequestBody formBody = new FormBody.Builder()
+        FormBody.Builder builder = new FormBody.Builder();
-                .add("content", strings[1])
+        builder.add("content", postModel.content.get());
-                .build();
+        RequestBody formBody = builder.build();
 
         Request request = new Request.Builder()
                 .addHeader("Authorization", "Bearer " + accessToken)
                 .method("POST", formBody)
-                .url(strings[0])
+                .url(micropubBackend)
                 .build();
 
         OkHttpClient client = new OkHttpClient();
@@ -59,7 +60,7 @@ public class PostMessageTask extends AsyncTask<String, Void, String> {
     }
 
     protected void onPostExecute(String message) {
-        mEdit.setText("");
         Toast.makeText(context.get(), message, Toast.LENGTH_SHORT).show();
+        postModel.content.set("");
     }
 }

app/src/main/java/eu/stuifzand/micropub/PostViewModel.java

@@ -0,0 +1,13 @@
+package eu.stuifzand.micropub;
+
+import android.arch.lifecycle.ViewModel;
+import android.databinding.ObservableField;
+
+
+public class PostViewModel extends ViewModel {
+    public final ObservableField<String> content = new ObservableField<>();
+
+    public PostViewModel() {
+        this.content.set("test");
+    }
+}

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

@@ -1,7 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+        <variable
+            name="viewModel"
+            type="eu.stuifzand.micropub.PostViewModel" />
+    </data>
+
+    <android.support.design.widget.CoordinatorLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         tools:context="eu.stuifzand.micropub.MainActivity">
@@ -20,7 +28,7 @@
 
         </android.support.design.widget.AppBarLayout>
 
-    <include layout="@layout/content_main" />
+        <include layout="@layout/content_main" app:viewModel="@{viewModel}"/>
 
         <android.support.design.widget.FloatingActionButton
             android:id="@+id/fab"
@@ -31,3 +39,4 @@
             app:srcCompat="@android:drawable/ic_dialog_email" />
 
     </android.support.design.widget.CoordinatorLayout>
+</layout>

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

@@ -1,7 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+        <variable
+            name="viewModel"
+            type="eu.stuifzand.micropub.PostViewModel" />
+    </data>
+
+    <android.support.constraint.ConstraintLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:background="@android:color/holo_blue_bright"
@@ -11,30 +19,28 @@
 
         <EditText
             android:id="@+id/content"
-        android:layout_width="0dp"
+            android:layout_width="328dp"
             android:layout_height="230dp"
-        android:layout_marginBottom="272dp"
+            android:layout_marginEnd="8dp"
-        android:layout_marginEnd="16dp"
+            android:layout_marginStart="8dp"
-        android:layout_marginStart="16dp"
             android:layout_marginTop="16dp"
-        android:autoText="false"
             android:background="@android:color/white"
             android:ems="10"
             android:gravity="top"
             android:inputType="textMultiLine"
-        android:padding="3px"
+            android:padding="3dp"
             android:singleLine="false"
-        app:layout_constraintBottom_toBottomOf="parent"
+            android:text="@={viewModel.content}"
             app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintHorizontal_bias="0.0"
             app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+            app:layout_constraintTop_toBottomOf="@+id/labelCounter" />
 
         <Button
             android:id="@+id/btnPost"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginEnd="8dp"
+            android:layout_marginRight="8dp"
             android:layout_marginTop="8dp"
             android:onClick="sendPost"
             android:text="Post"
@@ -51,4 +57,31 @@
             android:text="Sign in"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintStart_toStartOf="parent" />
+
+        <TextView
+            android:id="@+id/labelCounter"
+            android:layout_width="74dp"
+            android:layout_height="0dp"
+            android:layout_marginEnd="16dp"
+            android:layout_marginTop="16dp"
+            android:text="@{String.valueOf(viewModel.content.length)}"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/textView2"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:layout_marginBottom="8dp"
+            android:layout_marginEnd="8dp"
+            android:layout_marginStart="8dp"
+            android:layout_marginTop="8dp"
+            android:text="@{viewModel.content}"
+            app:layout_constraintBottom_toTopOf="@+id/button"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/btnPost" />
+
     </android.support.constraint.ConstraintLayout>
+
+</layout>

build.gradle

@@ -25,3 +25,7 @@ allprojects {
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
+
+ext {
+    archLifecycleVersion = "1.0.0"
+}