Android for ever: Load animated GIF from Internet, example 2 to load new animated Google logo

الاثنين، 21 سبتمبر 2015

Load animated GIF from Internet, example 2 to load new animated Google logo

Actually it is similar to the example of "Load animated GIF from Internet", but load the new animated Google logo.

com.blogspot.android_er.androidgif.GifView.java

package com.blogspot.android_er.androidgif;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Movie;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Toast;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class GifView extends View{

    //Set true to use decodeStream
    //Set false to use decodeByteArray
    private static final boolean DECODE_STREAM = true;

    private InputStream gifInputStream;
    private Movie gifMovie;
    private int movieWidth, movieHeight;
    private long movieDuration;
    private long mMovieStart;

    //original source
    //final static String gifAddr = "https://lh4.googleusercontent.com/-HAx9Y7EqDgI/VendP007MKI/AAAAAAAAEpE/3pplCHO0MAA/w1044-h522-no/GD_article_sharegraphic.gif";
    //my copy of animated Google Logo
    final static String gifAddr = "http://goo.gl/ZHn9K7";
    public GifView(Context context) {
        super(context);
        init(context);
    }

    public GifView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public GifView(Context context, AttributeSet attrs,
                   int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context);
    }

    private void init(final Context context){
        setFocusable(true);

        gifMovie = null;
        movieWidth = 0;
        movieHeight = 0;
        movieDuration = 0;

        Thread threadLoadGif = new Thread(new Runnable(){

            @Override
            public void run() {
                try {
                    URL gifURL = new URL(gifAddr);

                    HttpURLConnection connection = (HttpURLConnection)gifURL.openConnection();
                    gifInputStream = connection.getInputStream();

                    if(DECODE_STREAM){
                        gifMovie = Movie.decodeStream(gifInputStream);
                    }else{
                        byte[] array = streamToBytes(gifInputStream);
                        gifMovie = Movie.decodeByteArray(array, 0, array.length);
                    }

                    movieWidth = gifMovie.width();
                    movieHeight = gifMovie.height();
                    movieDuration = gifMovie.duration();

                    ((MainActivity)context).runOnUiThread(new Runnable(){

                        @Override
                        public void run() {
                            //request re-draw layout
                            invalidate();
                            requestLayout();
                            Toast.makeText(context,
                                    movieWidth + " x " + movieHeight + "\n"
                                            + movieDuration,
                                    Toast.LENGTH_LONG).show();
                        }});

                } catch (MalformedURLException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }});

        threadLoadGif.start();

    }

    private static byte[] streamToBytes(InputStream is) {
        ByteArrayOutputStream os = new ByteArrayOutputStream(1024);
        byte[] buffer = new byte[1024];
        int len;
        try {
            while ((len = is.read(buffer)) >= 0) {
                os.write(buffer, 0, len);
            }
        } catch (java.io.IOException e) {
        }
        return os.toByteArray();
    }

    @Override
    protected void onMeasure(int widthMeasureSpec,
                             int heightMeasureSpec) {
        setMeasuredDimension(movieWidth, movieHeight);
    }

    public int getMovieWidth(){
        return movieWidth;
    }

    public int getMovieHeight(){
        return movieHeight;
    }

    public long getMovieDuration(){
        return movieDuration;
    }

    @Override
    protected void onDraw(Canvas canvas) {

        long now = android.os.SystemClock.uptimeMillis();
        if (mMovieStart == 0) {   // first time
            mMovieStart = now;
        }

        if (gifMovie != null) {

            int dur = gifMovie.duration();
            if (dur == 0) {
                dur = 1000;
            }

            int relTime = (int)((now - mMovieStart) % dur);

            gifMovie.setTime(relTime);

            gifMovie.draw(canvas, 0, 0);
            invalidate();

        }

    }
}

Add <com.blogspot.android_er.androidgif.GifView> in layout file, layout/activity_main.xml

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <com.blogspot.android_er.androidgif.GifView
        android:id="@+id/gifview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal" />

</LinearLayout>

Nothing to do in com.blogspot.android_er.androidgif.MainActivity.java

package com.blogspot.android_er.androidgif;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    GifView gifView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        gifView = (GifView)findViewById(R.id.gifview);
    }

}

Edit src/main/AndroidManifest.xml to add <uses-permission> of "android.permission.INTERNET", and disable hardware ccceleration by setting android:hardwareAccelerated="false".

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.blogspot.android_er.androidgif" >

    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:hardwareAccelerated="false" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>