问题背景：要让Camera循环聚焦，聚焦完成后进行拍照，在拍照的数据里截取出一定区域的数据。在initCamera里设置聚焦模式：
List allFocus = myParam.getSupportedFocusModes();
for(String ff:allFocus){
Log.i(tag, ff + ...FOCUS...);
}
if(allFocus.contains(Camera.Parameters.FLASH_MODE_AUTO)){
myParam.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
Focus_Mode = 1;
}
else if(allFocus.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)){
myParam.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);// FOCUS_MODE_CONTINUOUS_PICTURE FOCUS_MODE_AUTO
Focus_Mode = 2;
}
myCamera.setParameters(myParam);
然后有个GetPictureThread进行每隔一段时间聚焦并且拍照：
class GetPictureThread implements Runnable{
public void run() {
// TODO Auto-generated method stub
while(!Thread.currentThread().isInterrupted()){
if(myCamera != null && isPreview){
if(Focus_Mode == 1 && (!isFocusing)){
myCamera.autoFocus(mAutoFocusCallback);
}
else if(Focus_Mode == 2){
myCamera.takePicture(myShutterCallback, null, myJpegCallback);
}
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Thread.currentThread().interrupt();
}
}
}
}
}
原来设的GetPictureThread是每隔1200毫秒触发一次，在中兴的Geek手机上一切良好。在华为G700上，总是拍一张就挂，挂的log如下：
12-07 18:05:33.227: D/dalvikvm(13589): threadid=11: exiting
12-07 18:05:33.227: W/dalvikvm(13589): threadid=11: thread exiting with uncaught exception (group=0x417669a8)
12-07 18:05:33.230: E/AndroidRuntime(13589): FATAL EXCEPTION: Thread-1177
12-07 18:05:33.230: E/AndroidRuntime(13589): java.lang.RuntimeException: autoFocus failed
12-07 18:05:33.230: E/AndroidRuntime(13589):at android.hardware.Camera.native_autoFocus(Native Method)
12-07 18:05:33.230: E/AndroidRuntime(13589):at android.hardware.Camera.autoFocus(Camera.java:1120)
12-07 18:05:33.230: E/AndroidRuntime(13589):at org.yanzi.rectphoto_wuzhou.RectPhoto$GetPictureThread.run(RectPhoto.java:428)
12-07 18:05:33.230: E/AndroidRuntime(13589):at java.lang.Thread.run(Thread.java:838)
12-07 18:05:33.240: I/Camera(13589): handleMessage: 2
反正就是auto focus出问题了，单看这里的log看不出所以然来。话说2000元买的G'700还是支持自动聚焦的吧。截取所有的log又看了次，搜索关键字：autofocus，得到以下信息：
F:
