m_objCamera = Camera.open();
Camera.Parameters objParam = m_objCamera.getParameters();
//設(shè)置對焦模式為持續(xù)對焦,(最好先判斷一下手機(jī)是否有這個(gè)對焦模式,有些手機(jī)沒有會(huì)報(bào)錯(cuò)的)
objParam.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
m_objCamera.setDisplayOrientation(90);
m_objCamera.setParameters(objParam);
m_objCamera.startPreview();