Android 解码播放GIF图像
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package com.terry.gif;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.View;
public class TypegifView extends View implements Runnable {
gifOpenHelper gHelper;
private boolean isStop = true;
int delta;
String title;
Bitmap bmp;
// construct - refer for java
public TypegifView(Context context) {
this(context, null);
}
// construct - refer for xml
public TypegifView(Context context, AttributeSet attrs) {
super(context, attrs);
//添加属性
TypedArray ta = context.obtainStyledAttributes(attrs,
R.styleable.gifView);
int n = ta.getIndexCount();
for (int i = 0; i < n; i++) {
int attr = ta.getIndex(i);
switch (attr) {
case R.styleable.gifView_src:
int id = ta.getResourceId(R.styleable.gifView_src, 0);
setSrc(id);
break;
case R.styleable.gifView_delay:
int idelta = ta.getInteger(R.styleable.gifView_delay, 1);
setDelta(idelta);
break;
case R.styleable.gifView_stop:
boolean sp = ta.getBoolean(R.styleable.gifView_stop, false);
if (!sp) {
setStop();
}
break;
}
}
ta.recycle();
}
/**
* 设置停止
*
* @param stop
*/
public void setStop() {
isStop = false;
}
/**
* 设置启动
*/
public void setStart() {
isStop = true;
Thread updateTimer = new Thread(this);
updateTimer.start();
}
/**
* 通过下票设置第几张图片显示
* @param id
*/
public void setSrc(int id) {
gHelper = new gifOpenHelper();
gHelper.read(TypegifView.this.getResources().openRawResource(id));
bmp = gHelper.getImage();// 得到第一张图片
}
public void setDelta(int is) {
delta = is;
}
// to meaure its Width & Height
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(measureWidth(widthMeasureSpec),
measureHeight(heightMeasureSpec));
}
private int measureWidth(int measureSpec) {
return gHelper.getWidth();
}
private int measureHeight(int measureSpec) {
return gHelper.getHeigh();
}
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
canvas.drawBitmap(bmp, 0, 0, new Paint());
bmp = gHelper.nextBitmap();
}
public void run() {
// TODO Auto-generated method stub
while (isStop) {
try {
this.postInvalidate();
Thread.sleep(gHelper.nextDelay() / delta);
} catch (Exception ex) {
}
}
}
}
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.View;
public class TypegifView extends View implements Runnable {
gifOpenHelper gHelper;
private boolean isStop = true;
int delta;
String title;
Bitmap bmp;
// construct - refer for java
public TypegifView(Context context) {
this(context, null);
}
// construct - refer for xml
public TypegifView(Context context, AttributeSet attrs) {
super(context, attrs);
//添加属性
TypedArray ta = context.obtainStyledAttributes(attrs,
R.styleable.gifView);
int n = ta.getIndexCount();
for (int i = 0; i < n; i++) {
int attr = ta.getIndex(i);
switch (attr) {
case R.styleable.gifView_src:
int id = ta.getResourceId(R.styleable.gifView_src, 0);
setSrc(id);
break;
case R.styleable.gifView_delay:
int idelta = ta.getInteger(R.styleable.gifView_delay, 1);
setDelta(idelta);
break;
case R.styleable.gifView_stop:
boolean sp = ta.getBoolean(R.styleable.gifView_stop, false);
if (!sp) {
setStop();
}
break;
}
}
ta.recycle();
}
/**
* 设置停止
*
* @param stop
*/
public void setStop() {
isStop = false;
}
/**
* 设置启动
*/
public void setStart() {
isStop = true;
Thread updateTimer = new Thread(this);
updateTimer.start();
}
/**
* 通过下票设置第几张图片显示
* @param id
*/
public void setSrc(int id) {
gHelper = new gifOpenHelper();
gHelper.read(TypegifView.this.getResources().openRawResource(id));
bmp = gHelper.getImage();// 得到第一张图片
}
public void setDelta(int is) {
delta = is;
}
// to meaure its Width & Height
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(measureWidth(widthMeasureSpec),
measureHeight(heightMeasureSpec));
}
private int measureWidth(int measureSpec) {
return gHelper.getWidth();
}
private int measureHeight(int measureSpec) {
return gHelper.getHeigh();
}
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
canvas.drawBitmap(bmp, 0, 0, new Paint());
bmp = gHelper.nextBitmap();
}
public void run() {
// TODO Auto-generated method stub
while (isStop) {
try {
this.postInvalidate();
Thread.sleep(gHelper.nextDelay() / delta);
} catch (Exception ex) {
}
}
}
}
setContentView(R.layout.main);
Button btn = (Button) findViewById(R.id.Button01);
Button btn2 = (Button) findViewById(R.id.Button02);
final TypegifView view = (TypegifView) findViewById(R.id.gifView1);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
view.setStop();
}
});
btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
view.setStart();
}
});
Button btn = (Button) findViewById(R.id.Button01);
Button btn2 = (Button) findViewById(R.id.Button02);
final TypegifView view = (TypegifView) findViewById(R.id.gifView1);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
view.setStop();
}
});
btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
view.setStart();
}
});
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