我找到了这个解决方案,但不幸的是,它对我不起作用。当我只显示一个小的移动矩形时,没有繁重的动画,它工作正常,但我想显示一些我用 .png 加载的动画帧,每当我最小化我的应用程序或按下后退按钮时,我立即得到一个 SIGSEV 错误。
对于一个我用很多点绘制图形的屏幕,我找到了一个解决方案,在我画完线条后我只是停止线程,但是由于我需要显示一个移动的动画,所以我不能这样做特定的片段。
我的渲染线程代码如下所示:
private class RenderThread extends Thread {
private volatile boolean mRunning = true;
int framecount = 1;
@Override
public void run() {
while (mRunning && !Thread.interrupted()) {
final Canvas canvas = mSimulationAnimationView.lockCanvas(null);
try {
canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
drawCar(canvas);
} finally {
mSimulationAnimationView.unlockCanvasAndPost(canvas);
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// Sleep if the Thread is interrupted
}
}
}
public void stopRendering() {
interrupt();
mRunning = false;
}
private void drawCar(Canvas canvas){
if(framecount==1){
canvas.drawBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.piston_frame_one), 10, 10, null);
framecount++;
}
else{
canvas.drawBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.piston_frame_two), 10, 10, null);
framecount--;
}
}
}//RenderThread
这显然是基于 Romain Guy 的示例,可以在这里找到
非常感谢您的帮助!
编辑:故障转储是这个:
********** Crash dump: **********
Build fingerprint: 'google/hammerhead/hammerhead:5.1.1/LMY48B/1863243:user/release-keys'
pid: 16130, tid: 16343, name: Thread-19966 >>> package.package.package <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x9ee3ad10
Stack frame #00 pc 001b474a /system/lib/libskia.so (S32A_Opaque_BlitRow32_neon_src_alpha(unsigned int*, unsigned int const*, int, unsigned int)+109)
Stack frame #01 pc 001072fb /system/lib/libskia.so
Stack frame #02 pc 00103793 /system/lib/libskia.so
Stack frame #03 pc 0010385f /system/lib/libskia.so (SkScan::FillIRect(SkIRect const&, SkRegion const*, SkBlitter*)+198)
Stack frame #04 pc 0010395f /system/lib/libskia.so (SkScan::FillIRect(SkIRect const&, SkRasterClip const&, SkBlitter*)+36)
Stack frame #05 pc 000e0e27 /system/lib/libskia.so (SkDraw::drawBitmap(SkBitmap const&, SkMatrix const&, SkPaint const&) const+464)
Stack frame #06 pc 000d90c9 /system/lib/libskia.so
Stack frame #07 pc 000d91b1 /system/lib/libskia.so (SkCanvas::drawBitmap(SkBitmap const&, float, float, SkPaint const*)+116)
Stack frame #08 pc 000947d1 /system/lib/libandroid_runtime.so (android::SkiaCanvas::drawBitmap(SkBitmap const&, float, float, SkPaint const*)+12)
Stack frame #09 pc 0008a7b7 /system/lib/libandroid_runtime.so
Stack frame #10 pc 007eff33 /data/dalvik-cache/arm/system@framework@boot.oat