init commit

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild

README.md

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+# Android Link Preview
+
+An Android Library with demo application, to fetch meta-data from url, like Facebook and Whatsapp ....
+
+## Installation
+
+Add it in your root build.gradle at the end of repositories:
+
+```
+	allprojects {
+		repositories {
+			...
+			maven { url 'https://jitpack.io' }
+		}
+	}
+```
+Add the dependency
+```
+    dependencies {
+    	compile 'com.github.omegaes:Android-Link-Preview:1.0.0'
+    }
+````
+
+
+## Usage
+
+Request metadata for url, it will execute in background thread, you will get an instance from LinkPreview
+or an exception, keep in your mind that onSuccess, onFailed execute in background thread, use handler to access UI objects
+
+```
+LinkUtil.getInstance().getLinkPreview(Context, String url,GetLinkPreviewListener)
+```
+
+LinkPreview
+
+```
+class LinkPreview {
+
+    String title;
+    String description;
+    String link;
+    String siteName;
+    File imageFile;
+
+}
+```
+
+GetLinkPreviewListener
+```
+interface {
+    void onSuccess(LinkPreview link);
+    void onFailed(Exception e);
+}
+```
+
+
+## Contributing
+
+1. Fork it!
+2. Create your feature branch: `git checkout -b my-new-feature`
+3. Commit your changes: `git commit -am 'Add some feature'`
+4. Push to the branch: `git push origin my-new-feature`
+5. Submit a pull request :D
+
+## History
+
+Not yet
+
+## Author
+
+* **Abdulrahman Babil** - *Software engineer* - [Mega4Tech](http://mega4tech.com)
+

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.0"
+    defaultConfig {
+        applicationId "com.mega4tech.androidlinkpreview"
+        minSdkVersion 14
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+repositories {
+    mavenCentral() // jcenter() works as well because it pulls from Maven Central
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:25.2.0'
+    testCompile 'junit:junit:4.12'
+    compile project(':linkpreview')
+
+    compile 'com.github.bumptech.glide:glide:3.7.0'
+    compile 'com.android.support:support-v4:25.2.0'
+
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/aboodba/Library/Android/sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class title to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

app/src/androidTest/java/com/mega4tech/androidlinkpreview/ExampleInstrumentedTest.java

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+package com.mega4tech.androidlinkpreview;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation 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() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.mega4tech.androidlinkpreview", appContext.getPackageName());
+    }
+}

app/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.mega4tech.androidlinkpreview">
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <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>

app/src/main/java/com/mega4tech/androidlinkpreview/MainActivity.java

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+package com.mega4tech.androidlinkpreview;
+
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.ProgressBar;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.bumptech.glide.Glide;
+import com.mega4tech.linkpreview.GetLinkPreviewListener;
+import com.mega4tech.linkpreview.LinkPreview;
+import com.mega4tech.linkpreview.LinkUtil;
+
+public class MainActivity extends AppCompatActivity {
+
+    private LinearLayout activityMain;
+    private EditText linkEt;
+    private Button linkFetchBtn;
+    private RelativeLayout previewGroup;
+    private ImageView imgPreviewIv;
+    private TextView titleTv;
+    private TextView descTv;
+    private TextView siteTv;
+    private ProgressBar progress;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        initView();
+
+        linkFetchBtn.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                progress.setVisibility(View.VISIBLE);
+                previewGroup.setVisibility(View.GONE);
+                LinkUtil.getInstance().getLinkPreview(MainActivity.this, linkEt.getText().toString(), new GetLinkPreviewListener() {
+                    @Override
+                    public void onSuccess(final LinkPreview link) {
+
+                        runOnUiThread(new Runnable() {
+                            @Override
+                            public void run() {
+                                progress.setVisibility(View.GONE);
+                                previewGroup.setVisibility(View.VISIBLE);
+                                titleTv.setText(link.getTitle() != null ? link.getTitle() : "" );
+
+                                descTv.setText(link.getDescription() != null ? link.getDescription() : "" );
+                                siteTv.setText(link.getSiteName() != null ? link.getSiteName() : "" );
+                                previewGroup.setOnClickListener(new View.OnClickListener() {
+                                    @Override
+                                    public void onClick(View v) {
+                                        Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(link.getLink()));
+                                        startActivity(browserIntent);
+                                    }
+                                });
+                                if(link.getImageFile() != null)
+                                    Glide.with(MainActivity.this).load(link.getImageFile()).into(imgPreviewIv);
+                                else
+                                    Glide.with(MainActivity.this).load(R.mipmap.ic_launcher).into(imgPreviewIv);
+                            }
+                        });
+
+                    }
+
+                    @Override
+                    public void onFailed(Exception e) {
+
+                        progress.setVisibility(View.GONE);
+                        previewGroup.setVisibility(View.VISIBLE);
+                        Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show();
+                    }
+                });
+            }
+        });
+    }
+
+    private void initView() {
+        activityMain = (LinearLayout) findViewById(R.id.activity_main);
+        linkEt = (EditText) findViewById(R.id.link_et);
+        linkFetchBtn = (Button) findViewById(R.id.link_fetch_btn);
+        previewGroup = (RelativeLayout) findViewById(R.id.preview_group);
+        imgPreviewIv = (ImageView) findViewById(R.id.img_preview_iv);
+        titleTv = (TextView) findViewById(R.id.title_tv);
+        descTv = (TextView) findViewById(R.id.desc_tv);
+        siteTv = (TextView) findViewById(R.id.site_tv);
+        progress = (ProgressBar) findViewById(R.id.progress);
+    }
+}

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

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+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/activity_main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    tools:context="com.mega4tech.androidlinkpreview.MainActivity">
+
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <EditText
+            android:id="@+id/link_et"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"/>
+
+        <Button
+            android:id="@+id/link_fetch_btn"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Fetch"/>
+
+    </LinearLayout>
+
+
+    <RelativeLayout
+        android:id="@+id/preview_group"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone">
+
+        <ImageView
+            android:id="@+id/img_preview_iv"
+            android:layout_width="200dp"
+            android:layout_height="200dp"
+            android:layout_alignParentLeft="true"
+            android:layout_alignParentTop="true"
+            android:padding="20dp"/>
+
+        <TextView
+            android:id="@+id/title_tv"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+
+            android:layout_toRightOf="@id/img_preview_iv"
+            android:text="ti"
+            android:textSize="20sp"/>
+
+        <TextView
+            android:id="@+id/desc_tv"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_below="@id/title_tv"
+            android:layout_marginTop="12dp"
+            android:layout_toRightOf="@id/img_preview_iv"
+            android:text="desc"
+            android:textSize="12sp"/>
+
+        <TextView
+            android:id="@+id/site_tv"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_below="@id/desc_tv"
+            android:layout_marginTop="12dp"
+            android:layout_toRightOf="@id/img_preview_iv"
+            android:text="desc"
+            android:textSize="12sp"/>
+
+    </RelativeLayout>
+
+
+    <ProgressBar
+        android:id="@+id/progress"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:visibility="gone"/>
+
+</LinearLayout>

app/src/main/res/values-w820dp/dimens.xml

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+<resources>
+    <!-- Example customization of dimensions originally defined in res/values/dimens.xml
+         (such as screen margins) for screens with more than 820dp of available width. This
+         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
+    <dimen name="activity_horizontal_margin">64dp</dimen>
+</resources>

app/src/main/res/values/colors.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#3F51B5</color>
+    <color name="colorPrimaryDark">#303F9F</color>
+    <color name="colorAccent">#FF4081</color>
+</resources>