This example implement a custom view, GifView, to display animated GIF using android.graphics.Movie, load movie with with Movie.decodeStream(InputStream).
Download and copy the GIF file (android_er.gif) to /res/drawable/ folder.
 |
| android_er.gif |
Create GifView.java extends View
package com.example.androidgif;
import java.io.InputStream;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Movie;
import android.util.AttributeSet;
import android.view.View;
public class GifView extends View {
private InputStream gifInputStream;
private Movie gifMovie;
private int movieWidth, movieHeight;
private long movieDuration;
private long mMovieStart;
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(Context context){
setFocusable(true);
gifInputStream = context.getResources()
.openRawResource(R.drawable.android_er);
gifMovie = Movie.decodeStream(gifInputStream);
movieWidth = gifMovie.width();
movieHeight = gifMovie.height();
movieDuration = gifMovie.duration();
}
@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();
}
}
}
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:orientation="vertical"
tools:context="com.example.androidgif.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" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/android_er"
/>
<com.example.androidgif.GifView
android:id="@+id/gifview"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<TextView
android:id="@+id/textinfo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="info..." />
</LinearLayout>
MainActivity.java
package com.example.androidgif;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class MainActivity extends Activity {
TextView textViewInfo;
GifView gifView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gifView = (GifView)findViewById(R.id.gifview);
textViewInfo = (TextView)findViewById(R.id.textinfo);
String stringInfo = "";
stringInfo += "Duration: " + gifView.getMovieDuration() + "\n";
stringInfo += "W x H: "
+ gifView.getMovieWidth() + " x "
+ gifView.getMovieHeight() + "\n";
textViewInfo.setText(stringInfo);
}
}
IMPORTANT!
Modify AndroidManifest.xml to turn OFF hardwareAccelerated. Read remark on the bottom.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.androidgif"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.androidgif.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>
){kind=link}
0 تعليقات