我正在尝试使用Android中的Movie类在onDraw方法中显示一个动态gif图像,代码如下:
@Override
protected void onDraw(Canvas canvas) {
canvas.drawColor(Color.TRANSPARENT);
super.onDraw(canvas);
long now = android.os.SystemClock.uptimeMillis();
if (movieStart == 0) {
movieStart = now;
}
movie = getMovieFromGif();
if (movie != null && movie.duration() > 0) {
try {
int relTime = (int) ((now - movieStart) % movie.duration());
movie.setTime(relTime);
float movie_height = convertDpToPixels(movie.height());
float movie_width = convertDpToPixels(movie.width());
float new_movie_height = movie_height;
float new_movie_width = movie_width;
float movie_ratio = movie_width / movie_height;
if (new_movie_width > container_width) {
new_movie_width = container_width;
new_movie_height = new_movie_width / movie_ratio;
}
if (new_movie_height > container_height) {
new_movie_height = container_height;
new_movie_width = new_movie_height * movie_ratio;
}
float scale_x = container_width / new_movie_width;
float scale_y = container_height / new_movie_height;
scale_x = new_movie_width / (float) movie.width();
scale_y = new_movie_height / (float) movie.height();
canvas.scale(scale_x, scale_y);
float x = 0;
if ((float) this.getWidth() > new_movie_width) {
x = ((this.getWidth() - (movie.width() * scale_x)) / 2f)
/ scale_x;
}
movie.draw(canvas, x, 0);
this.invalidate();
} catch (Exception ex) {
Log.i("onDraw()", "Error: " + ex.getMessage());
}
}
}
代码在大多数设备上运行良好,但在华为Ascend P7和三星Galaxy A5上,应用程序在movie.draw(canvas,x,0)时崩溃,并出现以下异常:
A/libc(23632):致命信号11(SIGSEGV),位于0x00000000处(code=1), 线程23632
有什么想法是这些设备上的movie.draw有什么问题吗?
更新: 以下是完整的堆栈跟踪
04-29 12:09:24.979:D / Activity(18951):#2 setTransGradationModeColor 到真实
04-29 12:09:25.049:I / Adreno-EGL(18951): :EGL 1.4 QUALCOMM构建:()
04-29 12:09:25.049:I / Adreno-EGL(18951):OpenGL ES着色器编译器版本: E031.24.02.07
04-29 12:09:25.049:I / Adreno-EGL(18951):Build 日期:08/06/14 Wed
04-29 12:09:25.049:I / Adreno-EGL(18951):本地 分支:rb1
04-29 12:09:25.049:I / Adreno-EGL(18951):远程 分支:
04-29 12:09:25.049:I / Adreno-EGL(18951):本地补丁:
04-29 12:09:25.049:I / Adreno-EGL(18951):重建分支:
04-29 12:09:25.079:D / OpenGLRenderer(18951):启用调试模式 0
04-29 12:09:25.109:D / skia(18951):streamToByte:输入agif 图像大于30MB。
04-29 12:09:25.109:D / skia(18951): streamToByte:Quram agif-长度:10473
04-29 12:09:25.109: D / skia(18951):Wink AGIF Move Constructer End 9,totalTime:2700
04-29 12:09:25.109:A / libc(18951):致命信号11(SIGSEGV),位于 0x00000000处(code=1),线程18951(com.android.gif)
在执行代码movie.draw()后出现致命信号错误,其余是movie.draw()之前的代码执行的堆栈跟踪。